THE DEVELOPMENT OF PLANT-TO-PLANT VARIABILITY IN MAIZE AT DIFFERENT PLANTING DENSITIES

The development of plant-to-plant variability in dry weight components, leaf area, plant height and ear characteristics was studied by sequential sampling in a single-cross maize (Zea mays L.) hybrid grown in the field at 50 000, 100 000, 150 000, and 200 000 plants/ha. Coefficients of variation (CV) for dry weight generally increased with plant density, and were greatest for ear components. The greatest density × time interaction for the CV of dry weights of most organs occurred 1–3 wk prior to silk emergence. The CVs of plant height and leaf area per plant were little affected by density. Total shoot weight, plant height, leaf area, and floret primordia per ear row were generally normally distributed for all densities throughout the season. This contrasted, at high densities, with bimodal frequency distributions of maximum silk length and upper ear weight at flowering, and of grain yield and kernel number per plant at maturity. Frequency distributions of silk length and other flowering data indicated that florets of barren plants ceased development prior to or immediately after flowering. Bimodal frequency distributions of grain number and grain weight per plant suggested the existence of some minimum assimilation rate per plant which must be exceeded before normal grain formation occurs.

Download Full-text

PEMANFAATAN PUPUK ORGANIK CAIR PAITAN (Tithonia diversifolia) PADA BERBAGAI DOSIS DAN RAGAM APLIKASINYA TERHADAP PERTUMBUHAN KAILAN (Brassica oleracea Var. Acephala)

JURNAL AGROTEKNOLOGI ◽

10.24014/ja.v11i1.7802 ◽

2020 ◽

Vol 11 (1) ◽

pp. 25

Author(s):

AHMAD TAOFIK ◽

SOFIYA HASANI ◽

AYU CAHYANINGTYAS ◽

BUDY FRASETYA

Keyword(s):

Leaf Area ◽

Plant Height ◽

Analysis Of Variance ◽

Growth Parameters ◽

Organic Fertilizer ◽

Dry Weight ◽

Fresh Weight ◽

Application Method ◽

Randomized Design ◽

Two Factors

The paitan plant contains allelopathic compounds for other plants so that the utilize of paitan plant as a source of liquid organic fertilizer (LOF) has not been widely applied. This research aimed to study the interaction between LOF dosage and appropriate application method of LOF to increase the growth of kailan plants. The research conducted at experimental garden of UIN Bandung from June-August 2016. The experimental design was a completely randomized design with two factors and replicated four times. The first factor was application methods (A), i.e. a1=direct application to the soil, and a2= spraying. The second factor was LOF dosage (T), i.e. t0: 0 ml plant-1, t1: 20 ml plant-1, t2: 40 ml plant-1, t3: 60 ml plant-1, t4: 80 ml plant-1. The growth parameters observed i.e. plant height (14, 21, 28, 35 and 42 Day after Transplanting (DAT)), leaf area 42 DAT, plant dry weight 42 DAT, and plant fresh weight 42 DAT. The data then analyzed with analysis of variance at a significant level of 5%. If the analysis of variance was significant, the Duncan multiple range test was used at α=5%. The research results showed there was no interaction between method of application with a various dosage of paitan LOF to all of the growth parameters. The application paitan LOF showed similar growth in terms of plant height, leaf area, plant dry, and plant fresh weight. The application method of paitan LOF direct to the soil or spraying to leaves can not increase kailan plant growth.

Download Full-text

Influence of plant density on the growth and productivity of an indeterminate tomato hybrid

Naukovì dopovìdì Nacìonalʹnogo unìversitetu bìoresursiv ì prirodokoristuvannâ Ukraïni ◽

10.31548/dopovidi2020.05.005 ◽

2020 ◽

Author(s):

V. Sievidov ◽

◽

I. Sievidov ◽

Keyword(s):

Leaf Area ◽

Plant Height ◽

Plant Density ◽

The Body ◽

Forest Steppe ◽

Left Bank ◽

Test Plot ◽

Tomato Plants ◽

Flowering Phase ◽

Crop Density

One of the main factors in obtaining consistently high tomato yields is to optimize the plant nutrition area. Determination of the optimal plant density, on the one hand, prevents oppression of plants at increased density. On the other hand, to avoid unnecessary expenses from the irrational use of the cultivated area. Vegetables are one of the main suppliers of biologically active substances necessary for a good human nutrition. They give the body a lot of vitamins, fiber, hemicelluloses, pectin substances, organic acids, various carbohydrates, mineral salts and a number of other biochemical compounds. Tomato is one of the main protected ground crops for Ukraine. Compared to other crops, tomatoes give early and stable yields. The issue of planting density of tomatoes is still not fully resolved, these elements of technology are not adapted to the soil and climatic conditions of the eastern part of the Left-Bank Forest-Steppe of Ukraine. The objective of our research was to determine the optimal crop density of hybrid tomato of indeterminate type in order to obtain the highest yield without reducing the quality of the product. The method of research. The research was carried out during 2018-2019. In film greenhouses, spring-summer crop rotation. The experiments were carried out with an indeterminate tomato hybrid: Tobolsk F1. Producers of seeds of indeterminate hybrids recommend different plant densities for growing conditions in film greenhouses 2.5-3.5 pcs/m2. Therefore, our research was planned to determine the optimal plant density of the indeterminate tomato hybrid Tobolsk F1 for film greenhouses. The total number of plants is 312 pcs. Sowing of seeds was carried out in the third decade of February. The seeds were sown into cassettes, and the seedlings were dived into pots (volume - 500 cm3) on time. Seedlings were grown using bottom irrigation and, at the age of 3-5 true leaves, the seedlings were planted on a test plot in a film greenhouse without heating. Research results. An analysis of phenological observations of plants showed that a change in the density of plants had practically no effect on the timing and rate of passage of the stages of organogenesis in plants, that is, in all variants of the experiment, the phases of development in plants began simultaneously. Indicators of plant parameters indicate that the data obtained both in the phase of mass flowering and mass fruiting of tomatoes differ among themselves. The difference in biometric parameters can be traced depending on the density of plants. Comparing the main biometric indicators, it can be noted that in the flowering phase, the height of plants ranged from 111.0 to 134.9 cm, in the fruiting phase - from 257.0 to 275.8 cm, while the plants differed in height by the density of 4.0 pcs/m2. The vegetative mass of a plant in the flowering phase was from 1884 g with a plant density of 2.5 pcs/m2 to 1144 g with a density of 4.0 pcs/m2. In the phase of flowering fruiting, the weight of the plant ranged from 1704 g to 1574 g, also decreasing with increasing density. In the flowering phase, an increase in the value of the leaf area indicator was observed to 5.8% with an increase in plant density, and in the fruiting phase, a slight decrease in the indicator to -1.8% was observed with an increase in plant density. So, according to biometric indicators, plants develop better with a density of 3.5 pcs/m2: tomato plants have the best indicators of vegetative mass and plant height, the leaf surface area varies within insignificant limits. The size of the fruits and the yield of standard tomato production are in direct proportion to the density of plants, that is, the more of them per unit area, the lower these indicators. In general, the increase in the density of tomato plants significantly affected the yield. Conclusions. Two-year researches have established that with an increase in plant density, in terms of leaf area in tomato plants of the Tobolsk F1 hybrid, on average, there was a slight fluctuation in the indicator at the level of 0.9-1.1%. The indicator of the vegetative mass of the plant ranged from -4.1 to +1.8% as compared to the control, also decreasing with increasing density. The indicator of plant height both in the flowering phase and in the fruiting phase, on the contrary, grew with an increase in plant density and ranged from -4.0 to + 7.1% compared to the control, while the plants differed in height by a density of 4.0 pcs/m2. In general, the studies carried out give grounds to conclude that in a spring film greenhouse, according to biometric indicators, on average, plants develop better with a density of 3.5 pcs/m2: tomato plants have the best ratio of vegetative mass, plant height and leaf area. The maximum yield of tomato hybrid Tobolsk F1 at the level of 15.8 kg/m2 in the eastern part of the Left-Bank Forest-Steppe of Ukraine was obtained with a plant density of 3.5 pcs/m2.

Download Full-text

PENGARUH KETERSEDIAAN AIR TERHADAP PERTUMBUHAN DAN PRODUKSI DUA KLON NILAM

Jurnal Penelitian Tanaman Industri ◽

10.21082/jlittri.v10n4.2004.159-165 ◽

2020 ◽

Vol 10 (4) ◽

pp. 159

Author(s):

. EMMYZAR

Keyword(s):

Leaf Area ◽

Plant Height ◽

Water Availability ◽

Oil Content ◽

Dry Weight ◽

Optimum Growth ◽

Effect Of Water ◽

Pogostemon Cablin ◽

Growth Production ◽

Number Of Leaves

Tanaman nilam tumbuh dan berproduksi dengan baik pada daerah dengan curah hujan relatif tinggi dan merata sepanjang tahun. Tanaman dalam kondisi kekurangan air terus menerus akan mengalami strcs air dan berpengaruh terhadap proses fisiologis, menurunkan permukaan trans- pirasi, luas daun menurun, dan mempercepat dcfiidrasi protoplasma. Penelitian pengaruh ketersediaan air terhadap petumbuhan dan produksi 2 (dua) klon nilam dilakukan di rumah kaca Instalasi Penelitian Cimanggu, Balittro Bogor mulai bulan Nopember 1999 sampai dengan Mei 2000. Penelitian ini betujuan untuk mengetahui pengaruh ketersediaan air terhadap partumbuhan dan produksi dua klon nilam (klon Sidikalang dan klon Situak) sekaligus diamati pengaruhnya terhadap kadar dan kualitas minyak nilam (rendemen, warna dan kandungan patchouly alkohol). Percobaan dilakukan dalam polibag menggunakan tanah kering jenis latosol Cimanggu Bogor yang diaduk dengan pupuk kandang sapi (3:1) sebanyak 10 kg/polibag disusun menggunakan rancangan factorial (dua faktor) dalam rancangan acak lengkap (RAL), diulang 3 kali. Ukuran plot 8 polibag/ perlakuan. Faktor pertama : klon nilam terdiri dari 2 jenis (K) yaitu : Kl = klon Sidikalang dan K2 = klon Situak. Faktor kedua: tingkat ketersediaan air (A) 4 taraf yaitu Al = 25% kapasitas lapang, A2 = 50% kapasitas lapang, A3 = 75% kapasitas lapang, dan A4 = 100 % kapasitas lapang. Peubah yang diamati meliputi persentase tumbuh tunas, tinggi tanaman, luas daun, bobot daun basah dan bobot daun kering, kadar minyak digambarkan dari rendemen dan kualitas minyak (wana dan kandungan patchouly alkohol). Hasil penelitian menunjukkan bahwa untuk jumlah tunas tidak ada interaksi antara tingkat ketersediaan air dan klon yang diuji, tetapi untuk jumlah daun ada interaksi. Tingkat pemberian air 75% kapasitas lapang (KL) secara keseluruhan memberikan pertumbuhan optimum bagi kedua klon, kecuali untuk parameter jumlah daun. Pada klon Situak. tingkat pemberian air 100% KL yang memberikan jumlah daun terbanyak. Perlakuan ketersediaan air 100% KL pada klon Sidikalang memberikan bobot daun kering tetinggi dibanding perlakuan lainnya, sedang untuk klon Situak, ketersediaan air pada taraf 75% KL memberikan bobot daun kering tetinggi. Rendemen minyak klon Situak dengan tingkat ketersediaan air 25% KL tertinggi (4.0%) dengan wana minyak kuning muda tcrang, diikuti tingkat 50% KL (3.0%) dengan wana minyak kusam/kemh. Kandungan patchouly alkohol klon Situak rata-rata (30%) lebih baik daripada klon Sidikalang, diperoleh dari perlakuan ketersediaan air 25% KL. Dapat disimpulkan bahwa untuk memperoleh petumbuhan dan produksi yang tinggi, ketersediaan air dalam tanah diperlukan antara 75 - 100% KL. Namun, untuk mendapatkan kandungan patchouly alkohol tinggi ketersediaan air yang dibutuhkan lebih rendah yaitu 25 % - 50%) KL.Kata kunci: Nilam, Pogostemon cablin, ketersediaan air, petumbuhan, produksi ABSTRACTThe effect of water availability the growth and production of two patchouly clones Patchouly plant grows and produces very well in the area with high and everly rain fall through the year. Plants with continuous shortage of water would face water stress and affect physiologis process, transpiration surface, leaf area and protoplasmic dehydration. Several levels of water needs were tested in this experiment, which was carried out in a glass house of Cimanggu Installation, Indonesian Spice and Medicinal Crops Research Institute, Bogor, rom November 1999 to May 2000. The objective was to find out the effect of water availability on two clones of patchouly growth, production and oil content (rendement, colour and patchouly alcohol). The experiment was conducted in polybags using Cimanggu Latosol soil mixed with cow dung (3:1), 10 kg/polybag, arranged in a factorially completely random design with 3 replications. Plot size was 8 polybag/treatment. The first factor was two clones of patchouly : K, = Sidikalang and K2 = Situak. The second factor was 4 levels of water availability: 2J% (A,), 50% (A2). 75% (A,), and 100% (A,) ield capacity (FC). Variables observed were percentage of shoot growth, plant height, leaf area, fresh weight and dry weight, oil content (rendement, colour and patchouly alcohol). The result showed that there was no interaction between the two factors for number of shoots. Clone of Sidikalang had higher plant height than that of Situak. The water availability of 75% (FC) gave optimum growth for the two clones, except the number of leaves. For Situak the water avaibility of 100% (FC) gave the highest number of leaves. For Sidikalang the water availability of 100% gave the highest dry weight of leaves. Oil rendement for Situak with 25% FC was the highest (4.0) with bright yellow colour. The content of patchouly alcohol for Situak was higher than that of Sidikalang (30%). Therefore, it can be concluded that to obtain the optimum growth and the higest production it needed 75 - 100% (FC) water availability, while for high patchouly alcohol content, it needed buzer the water availability, i.e. 25-50% (FC).Key words: Patchouli, Pogostemon cablin, water level, growth, production

Download Full-text

Growth and Development of Organic Arsenical-Susceptible and -Resistant Common Cocklebur (Xanthium strumarium) Biotypes Under Noncompetitive Conditions

Weed Technology ◽

10.1017/s0890037x00039361 ◽

1994 ◽

Vol 8 (1) ◽

pp. 154-158 ◽

Cited By ~ 8

Author(s):

William E. Haigler ◽

Billy J. Gossett ◽

James R. Harris ◽

Joe E. Toler

Keyword(s):

Growth Rate ◽

Leaf Area ◽

Plant Height ◽

Growth And Development ◽

Reproductive Potential ◽

Dry Weight ◽

Growing Season ◽

Xanthium Strumarium ◽

Relative Growth ◽

Growth Development

The growth, development, and reproductive potential of several populations of organic arsenical-susceptible (S) and -resistant (R) common cocklebur biotypes were compared under noncompetitive field conditions. Plant height, leaf area, aboveground dry weights, and relative growth rate (RGR) were measured periodically during the growing season. Days to flowering, bur dry weight, and number of burs per plant were also recorded. Arsenical S- and R-biotypes were similar in all measured parameters of growth, development, and reproductive potential. Populations within each biotype varied occasionally in plant height, leaf area, aboveground dry weights, and reproductive potential.

Download Full-text

RESPONSE OF GAMAL (Gliricidia sepium) AND INDIGOFERA (Indigofera zollingeriana) FORAGE ON APPLICATION OF ANORGANIC AND ORGANIC FERTILIZER

Pastura ◽

10.24843/pastura.2018.v08.i01.p08 ◽

2019 ◽

Vol 8 (1) ◽

pp. 33

Author(s):

Roni N.G.K. ◽

S.A. Lindawati

Keyword(s):

Leaf Area ◽

Plant Height ◽

Plant Species ◽

Organic Fertilizer ◽

Dry Weight ◽

Stem Diameter ◽

Inorganic Fertilizer ◽

Organic Fertilizers ◽

Total Dry Weight ◽

Leaf Dry Weight

The productivity of forage depends on the availability of nutrients in the soil where it is grown, so fertilization to replace harvested produce is absolutely necessary. This study aims to study the response of gamal and indigofera forage on application of inorganic and organic fertilizers. Research using a completely randomized design factorial pattern of two factors, the first factor is the type of plant (G = Gamal; I = Indigofera) and the second factor is the type of fertilizer (T = without Fertilizer; A = Inorganic fertilizer NPK; K = commercial organic fertilizer; O = conventional organic fertilizer; B = bioorganic fertilizer), repeated 4 times so that it consists of 40 experimental units. The variables observed were plant height, number of leaves, stem diameter, leaf dry weight, stem dry weight, total dry weight of leaves, ratio of dry weight of leaves/stems and leaf area per pot. The results showed that there was no interaction between plant species and types of fertilizer in influencing the response of gamal and indigofera plants. Plant species have a significant effect on stem diameter, while fertilizer types have a significant effect on plant height, leaf dry weight, total dry weight of leaves and leaf area per pot. Based on the results of the study it can be concluded that the response of gamal plants is similar to indigofera, all types of fertilizers can improve the response of plants and organic fertilizers produce the same crop response with inorganic fertilizers. Keywords: gamal, indigofera, inorganic fertilizer, organic fertilizer

Download Full-text

Evaluation of growth and yield of selected hybrid and inbred rice varieties grown in net-house during transplanted aman season

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v34i1.5755 ◽

1970 ◽

Vol 34 (1) ◽

pp. 67-73

Author(s):

M SH Islam ◽

MSU Bhuiya ◽

AR Gomosta ◽

AR Sarkar ◽

MM Hussain

Keyword(s):

Leaf Area ◽

Plant Height ◽

Dry Matter ◽

Dry Weight ◽

Growth And Yield ◽

Rooting Depth ◽

Rice Varieties ◽

Root Dry Weight ◽

Matter Production ◽

1000 Grain Weight

Pot experiments were conducted during T. aman 2001 and 2002 (wet season) at Bangladesh Rice Research Institute (BRRI) in net house. Hybrid variety Sonarbangla-1 and inbred modern variety BRRI dhan-31 were used in both the seasons and BRRI hybrid dhan-l was used in 2002. The main objective of the experiments was to compare the growth and yield behaviour of hybrid and inbred rice varieties under controlled condition. In 2001, BRRI dhan-3l had about 10-15% higher plant height, very similar tillers/plant, 15-25% higher leaf area at all days after transplanting (DAT) compared to Sonarbangla-1. Sonarbangla- 1 had about 40% higher dry matter production at 25 DAT but had very similar dry matter production at 50 and 75 DAT, 4-11% higher rooting depth at all DATs, about 22% higher root dry weight at 25 DAT, but 5-10% lower root dry weight at 50 and 75 DAT compared to BRRI dhan-31. The photosynthetic rate was higher (20 μ mol m-2/sec-1) in BRRI dhan-3l at 35 DAT (maximum tillering stage) but at 65 DAT, Sonarbangla-l had higher photosynthetic rate of 19.5 μ mol m-2 sec-1. BRRI dhan-3l had higher panicles/plant than Sonarbangla-1, but Sonarbangla-1 had higher number of grains/panicle, 1000-grain weight and grain yield than BRRI dhan-31. In 2002, BRRI dhan-31 had the highest plant height at 25 DAT, but at 75 DAT, BRRI hybrid dhan-l had the highest plant height. Sonarbangla-1 had the largest leaf area at 25 and 50 DAT followed by BRRI dhan-31, but at 75 DAT, BRRI dhan-31 had the largest leaf area. The highest shoot dry matter was observed in BRRI dhan-31 followed by Sonarbangla-1 at all DATs. Sonarbangla-1 had the highest rooting depth and root dry weight at all DATs. BRRI dhan-31 gave the highest number of panicles/plant followed by Sonarbangla-I, BRRI hybrid dhan-l had the highest grains/panicle followed by BRRI dhan-31 and Sonarbangla-I had the highest 1000-grain weight followed by BRRI dhan-31. The highest amount of grains/plant (34.6 g) was obtained from BRRI dhan-31. Key Words: Shoot dry matter; root dry weight; leaf area; photosynthesis; grain yield. DOI: 10.3329/bjar.v34i1.5755Bangladesh J. Agril. Res. 34(1) : 67-73, March 2009

Download Full-text

Simulated mesotrione drift followed by glyphosate, imazethapyr, bentazon or glyphosate plus chlorimuron in soybean

Canadian Journal of Plant Science ◽

10.4141/cjps08029 ◽

2009 ◽

Vol 89 (2) ◽

pp. 265-272

Author(s):

L. R. Brown ◽

D. E. Robinson ◽

K. Chandler ◽

C. J. Swanton ◽

R. E. Nurse ◽

...

Keyword(s):

Glycine Max ◽

Key Words ◽

Plant Height ◽

Seed Yield ◽

Plant Density ◽

Dry Weight ◽

Shoot Dry Weight ◽

Glycine Max L ◽

Herbicide Drift

There have been anecdotal accounts of increased crop sensitivity due to herbicide drift followed by an in-crop herbicide. An experiment was conducted from 2005 to 2007 at Elora, Ridgetown, and Woodstock, Ontario, to determine the effects of simulated mesotrione drift followed by in-crop applications of glyphosate, imazethapyr, bentazon and glyphosate plus chlorimuron on glyphosate-resistant soybean [Glycine max (L.) Merr.] visual injury, plant height, plant density, shoot dry weight, and seed yield. As the rate of simulated mesotrione drift increased, there was an increase in soybean injury and a decrease in shoot dry weight, height, and yield. Simulated mesotrione drift followed by bentazon resulted in synergistic responses in injury shortly after application in some environments. This increase in injury was transient, with no synergistic responses in density, shoot dry weight, and yield. In contrast, antagonistic responses were observed when glyphosate, imazethapyr, or glyphosate plus chlorimuron were applied after simulated mesotrione drift in some environments. Further research is required to develop a better understanding of the interactions of drift followed by the application of an in-crop herbicide. Key words: Bentazon, chlorimuron, glyphosate, imazethapyr, mesotrione, synergism

Download Full-text

The effects of ultraviolet-B radiation and carbon dioxide on growth and photosynthesis of tomato

Canadian Journal of Botany ◽

10.1139/b97-022 ◽

1997 ◽

Vol 75 (2) ◽

pp. 213-219 ◽

Cited By ~ 6

Author(s):

Xiuming Hao ◽

Beverley A. Hale ◽

Douglas P. Ormrod

Keyword(s):

Lycopersicon Esculentum ◽

Leaf Area ◽

Plant Height ◽

Net Photosynthesis ◽

Dry Weight ◽

Ultraviolet B ◽

Radiation Level ◽

Ultraviolet B Radiation ◽

Lycopersicon Esculentum Mill ◽

Uv Absorbing Compounds

Tomato (Lycopersicon esculentum Mill.) plants were exposed, in controlled environments with 2.7 kJ/(m2 ∙ day) background ultraviolet-B (UV-B) radiation from fluorescent and incandescent lamps, to ambient (380 μL ∙ L−1) or elevated (600 μL−1) CO2 combined with a total of 7.2 or 13.1 kJ/(m2 ∙ day) UV-B radiation to determine effects on growth and photosynthesis. Ten consecutive days of exposure to the higher level of UV-B significantly reduced total and stem dry weight, leaf area, and plant height compared with the lower level. Only leaf area and plant height were significantly reduced after 19 consecutive days of exposure. To investigate whether plants recover from UV-B damage, the UV-B exposures were halted for 3 days after 19 days of UV-B exposure and then restarted for a further 2 days. The largest reduction in plant growth was found after 3 days with no UV-B followed by 2 days of the higher level of UV-B. Plants did not recover from UV-B damage during the 3 days with background UV-B. Significant CO2xUV-B interactions were detected on stem dry weight after 10 consecutive days of the higher level of UV-B and on total dry weight, leaf dry weight, stem dry weight, and plant height after 3 days with no UV-B followed by 2 days of the higher level of UV-B. The higher dose of enhanced UV-B resulted in more severe damage at 600 μL ∙ L−1 CO2, than at ambient CO2. The higher level of UV-B did not affect the leaf net photosynthesis rate on a leaf area basis, although this UV-B level may have inhibited tomato growth through reducing the photosynthetic area. UV-absorbing compounds in leaves in the highest UV-B radiation level for 19 days were greater than for leaves with the lower dose. These UV-absorbing compounds in the higher UV-B dose diminished more than in the lower dose plants during the 3 days without UV-B. The UV-absorbing compounds maintained by plants exposed to the highest level of UV-B radiation may have protected plants from UV-B damage, particularly between 10 and 19 consecutive days of exposure. Key words: CO2, growth, Lycopersicon esculentum Mill., photosynthesis, tomato, ultraviolet-B radiation (UV-B), UV-absorbing compounds.

Download Full-text

Effect of water hyacinth compost on the morpho-physiological parameters of Soybean (Glycine max l.)

International Journal of Biological and Pharmaceutical Sciences Archive ◽

10.53771/ijbpsa.2021.2.1.0058 ◽

2021 ◽

Vol 2 (1) ◽

pp. 084-095

Author(s):

Ogbuehi HC ◽

Ibe PK

Keyword(s):

Glycine Max ◽

Leaf Area ◽

Plant Height ◽

Water Hyacinth ◽

Seed Weight ◽

Dry Weight ◽

Effect Of Water ◽

Shoot Dry Weight ◽

Glycine Max L ◽

Number Of Leaves

A pot experiment was conducted under rainfed condition to study the effect of water hyacinth compost on the morpho-physiological parameters of soybean (Glycine max L.) at the Teaching and Research Farm of Faculty of Agriculture and Veterinary Medicine, Imo State University, Owerri. The treatments were control (T1) 100g (T2), 150g (T3) and 200g (T4) of water hyacinth compost and replicated four times. The treatments were arranged in Complete Randomized Design (CRD). The parameters measured were plant height, number of leaves, leaf area (cm2), leaf area index, relative growth rate (RGR), Net assimilation rate (NAR), shoot dry weight(g), yield and yield components (Number of pods, pods weight, 100 seed weight). The results obtained indicated that T3 significantly produced highest plant height (57.6cm) compare to control. While it was observed that T4 (200g) significantly produced the highest number of leaves (233.25), leaf area (631.80cm2), shoot dry weight (15.445g), number of pods (129.75), pod weights (25.38g) seed weight (7.23g) and yield (0.72kg/ha) relative to control and other treatment levels. Root parameters were also significantly improved by the rates of water hyacinth application compared to control. It will be worthy to note that there was no nodulation perhaps that was why the yield was poor. The results showed that soybean growth can effectively be improved with incorporation of water hyacinth into soil.

Download Full-text

Growth Regulation of Sub-Tropical Perennials by Photoselective Plastic Films

Journal of Environmental Horticulture ◽

10.24266/0738-2898-19.2.65 ◽

2001 ◽

Vol 19 (2) ◽

pp. 65-68

Author(s):

Sandra B. Wilson ◽

Nihal C. Rajapakse

Keyword(s):

Leaf Area ◽

Plant Height ◽

Plant Species ◽

Spectral Distribution ◽

Growth Regulation ◽

Dry Weight ◽

Stem Length ◽

Plastic Films ◽

Control Film ◽

Leaf Dry Weight

Abstract Plant response to photoselective plastic films with varying spectral distribution properties was tested using three sub-tropical perennials: golden shrimp plant (Pachystachys lutea), Persian shield (Strobilanthes dyerianus), and cat whiskers (Orthosiphon stamineus). Films were designated YXE-10 [far-red (FR) light-absorbing film] and SXE-4 [red (R) light absorbing film]. Light transmitted through YXE-10 films reduced plant height (stem length) of golden shrimp plant and cat whiskers by 10 and 20%, respectively. Light transmitted through SXE-4 films increased plant height by 9% for golden shrimp plant but did not significantly increase stem length of Persian shield and cat whiskers species. Chlorophyll, leaf area, and mean days to flower generally were not affected by photoselective films, with the exception that cat whisker plants grown under YXE-10 films had reduced leaf area when compared to plants grown under SXE-4 or control films. As compared to the control film, light transmitted through YXE-10 films reduced leaf dry weight by 22–31% and stem dry weight by 19–28%, depending on the plant species. Root dry weight was not affected by spectral films.

Download Full-text