scholarly journals Growth and Yield Response of Groundnut (Arachis hypogaea L.) Varieties to Plant Density

2020 ◽  
Vol 8 (3) ◽  
pp. 633
Author(s):  
Gilbert Nwogboduhu Nwokwu ◽  
Ifeoma Lilian Agbedo Odoh ◽  
Egwu Patricia Ngozi
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Plant Density ◽  
Total Yield ◽  
Growth And Yield ◽  
Area Index ◽  
Relative Growth ◽  
Yield Parameters ◽  
Number Of Seeds ◽  
Number Of Branches

A field experiment was conducted at the research field of Faculty of Agriculture and Natural Resources Management, Ebonyi State University Abakaliki during the 2018 farming season to determine the effect of plant density on growth, yield and yield components of groundnut varieties. The experiment was conducted in a 3x4 factorial laid out in a randomized complete block design (RCBD). The treatments comprised three groundnut varieties (SAMNUT 24, 25 and 26) and four planting densities (40,000, 80,000, 120,000, and 160,000 plants ha-1). Each treatment was replicated four times. The parameters measured were plant height, number of leaves per plant, number of branches per plant, days to 50% flowering, shoot dry weight, leaf area index, crop growth rate, relative growth rate, net assimilation rate, number of pod per plant, pod weight per plant, hundred seed weight, number of seeds per plant, shelling percentage and total yield per hectare. The results showed that groundnut varieties were significant in all growth and yield parameters assessed except number of days to 50% flowering, Relative Growth Rate, number of pod per plant, and hundred seed weight while planting density recorded significant effect on all the growth and yield parameters. There were also significant interaction effects of varieties and plant density on plant height, number of branches per plant, leaf area index, relative growth rate, pod weight per plant, number of seeds per plant, and total yield per hectare. This result indicated that SAMNUT 26 and plant density of 160,000 plants ha-1 recorded the highest yield of groundnut and can be recommended for the farmers in the study area.

scholarly journals Factors Affecting Relative Growth Rate of Lettuce and Spinach in Hydroponics in a Greenhouse

HortScience ◽  
2017 ◽  
Vol 52 (12) ◽  
pp. 1742-1747
Author(s):  
Martin P.N. Gent
Keyword(s):  
Growth Rate ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Relative Growth Rate ◽  
Relative Increase ◽  
Solution Temperature ◽  
Area Index ◽  
Relative Growth ◽  
Factors Affecting ◽  
Daily Light Integral

Relative growth rate (RGR), the relative increase in weight per day, can analyze the effect of environment and nutrition on growth. I examined which of the parameters responding to plant growth scaled according to RGR for lettuce and spinach grown in heated greenhouses in hydroponics with control of the nutrient solution. The experiments for lettuce in 2006–08 included all times of year, high vs. low temperature, and effect of withdrawal of nitrogen. There were four parameters that were significant in multiple linear regression vs. RGR; irradiance divided by leaf area index if it was greater than one, or normalized daily light integral (NDLI), solution temperature, electrical conductivity (EC), and logarithm solution nitrate when it was between 3 and 55 mg·L−1 N. NDLI had the most significant coefficient, but the other parameters had regression coefficients more than three times se. For experiments on spinach in 2009–10, all the parameters mentioned previously were significant in multiple linear regression vs. RGR, except EC. The coefficient for NDLI in spinach was about half the value in lettuce. The coefficients for solution temperature and low nitrate were two and three times that in lettuce. In a third set of experiments on lettuce in 1996–98, solution temperature was the only significant parameter among those mentioned previously. The coefficient for solution temperature was similar to that for regression of lettuce in 2006–08.

scholarly journals Pengaruh Jarak Tanam Terhadap Pertumbuhan dan Hasil Jagung (Zea mayz.L) Pada Tingkat Umur Kelapa Sawit (Elaeis guineensis Jacq) [The Effect Spacing of Growth and Yield Corn (Zea mayz.L) of The Palm Oil (Elaeis guineensis Jacq) Grade Aged]

Buletin Palma ◽  
2018 ◽  
Vol 19 (2) ◽  
pp. 127 ◽  
Author(s):  
M Nur ◽  
Asrul Nln ◽  
Raffiudin Nln
Keyword(s):  
Growth Rate ◽  
Grain Yield ◽  
Relative Growth Rate ◽  
Palm Oil ◽  
Elaeis Guineensis ◽  
Growth And Yield ◽  
Relative Growth ◽  
Elaeis Guineensis Jacq

<p>The research spacing of corn growth and yield of the palm oil various aged is to know the effect of the spacing, palm oil grade aged, and interaction. The research was conducted in  Central Mamuju regency.  West Sulawesi from July to October, 2016<em>.</em> Experiments in the form of  RAK 1 factor , the treatment is spacing of  50 cm x 25 cm, 60 cm x 25 cm and 70 cm x 25 cm,  performed on palm oil aged 1.5 years, 2.5 years, 3.5 years and without palm oil, and repeated 3. The result showed for 70 cm x 25 cm is the best for all grade aged. The best especially in general for, relative growth rate ( 9.93 g. plant-<sup>2</sup>.week<sup>- 1</sup> ), grain yield (5.58ton ha<sup>-1</sup>)  of corm  of aged 2.5 yr palm oil  and there is interaction</p><p> </p><p align="center"><strong>ABSTRAK</strong></p><p class="Default">Penelitian pengaruh jarak tanam terhadap pertumbuhan dan hasil jagung pada tingkat umur kelapa sawit dilakukan untuk mengetahui pengaruh jarak tanam dan tingkat umur kelapa sawit serta interaksi antara jarak tanam dan tingkat umur kelapa sawit terhadap pertumbuhan dan hasil jagung. Penelitian dilaksanakan di Kabupaten Mamuju Tengah Propinsi Sulawesi Barat, dari bulan Juli sampai Oktober tahun 2016. Percobaan dalam bentuk Rancangan Acak Kelompok 1 faktor, perlakuannya adalah jarak tanam  50 cm x 25 cm,  60 cm x 25 cm dan 70 cm x 25 cm. Perlakuan dilakukan pada kelapa sawit umur 1,5 tahun, 2,5 tahun dan 3,5 tahun dan tanpa kelapa sawit, dan 3 ulangan. Hasil penelitian menunjukkan bahwa Jarak tanam 70 cm x 25 cm terbaik  pada semua tingkat umur, dan jagung pada kelapa sawit umur 2,5 tahun  secara umum terbaik, terutama pada laju tumbuh relatif  (9,93 g tan<sup>2</sup>.minggu<sup>-1</sup>) , hasil biji pipilan (5,58 ton ha<sup>-1</sup>), dan ada interaksi.</p>

scholarly journals Comparison of Growth Indices of Nigella sativa L. under Different Plant Densities and Fertilization

2019 ◽  
pp. 231
Author(s):  
Ioannis Roussis, Ioanna Kakabouki, Dimitrios Bilalis
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Plant Density ◽  
Nigella Sativa ◽  
Crop Growth ◽  
Growth And Yield ◽  
Growth Indices ◽  
Area Index ◽  
High Plant Density ◽  
Plant Densities

Agronomic practices such as plant density and fertilizer management are referred to comprise crop environment, which influences plant growth, productivity, and ultimately the yield. The objective of the current study was to evaluate the influence of plant density and fertilization on the growth and growth indices of Nigella sativa crop and to determine the association between yield and growth characteristics at both the single plant and crop stand level. The 2-year experiment was laid out in a split-plot design, with three replications, two main plots (200 and 300 plants m-2) and four sub-plots (fertilization treatments: control, compost, farmyard manure and inorganic fertilizer). The highest absolute growth rate (AGR) (0.0321 g day-1) and relative growth rate (RGR) (0.0714 g g-1 day-1) values were recorded when plants subjected to low-density and inorganic fertilization, while the highest crop growth rate (CGR) (8.0342 g m-2 day-1) was obtained under high-plant density and inorganic fertilization. Concerning specific leaf area (SLA), the highest value (196.28 cm2 g-1) was found in inorganic fertilized treatment. Leaf area index (LAI), Leaf area duration (LAD) and Biomass duration (BMD) were positively affected by both plant density and fertilization with the greatest values observed under high-density and fertilization. In conclusion, plant densities higher than 200 plants m-2 lead to higher crop growth, but lower growth of individual plants and decreased seed yield, while the application of inorganic fertilizers increases crop growth and yield as these fertilizers contain higher levels of nitrogen with high solubility and therefore quick availability for the crop than the organic fertilizers.

scholarly journals Grain growth and yield of whea under different irrigation regimes

1970 ◽  
Vol 2 (2) ◽  
pp. 35-41
Author(s):  
SA Haider ◽  
MZ Alam ◽  
NK Paul
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Grain Growth ◽  
Growth And Yield ◽  
Wheat Varieties ◽  
Relative Growth ◽  
Growing Seasons ◽  
Key Words Wheat ◽  
Irrigation Regimes ◽  
Condition C

A field experiment was carried out to study the influence of different irrigation regimes on the panicle and grain growth, relative growth rate of grain, grain abortion, yield and some yield components of four wheat varieties in two growing seasons. Irrigation regimes had significant effects on the aforesaid parameters and the varieties were found to be more efficient under well irrigated conditions. A drastic reduction in panicle and grain growth and yield and increase in grain abortion was noticed when the varieties were grown under rainfed condition. C 306 was found to be the most efficient to have higher values of panicle and grain growth, relative grain growth rate and yield under all the irrigation regimes in both the growing seasons. Key words: Wheat; irrigation; relative growth rate; grain abortion DOI: 10.3329/jles.v2i2.7495 J. Life Earth Sci., Vol. 2(2) 35-41, 2007

scholarly journals PENGARUH PUPUK KASCING DAN NPK MUTIARA 16:16:16 TERHADAP PERTUMBUHAN SERTA HASIL TANAMAN SELEDRI (Apium graviolens L.)

2020 ◽  
Vol 34 (3) ◽  
pp. 275-286
Author(s):  
Yurnie Sari Alphiani ◽  
Zulkifli ◽  
Sulhaswardi
Keyword(s):  
Growth Rate ◽  
Plant Height ◽  
Relative Growth Rate ◽  
Growth And Yield ◽  
Observation Data ◽  
Root Volume ◽  
Volume Number ◽  
Relative Growth ◽  
Affected Plant ◽  
Wet Weight

ABSTRACT The purpose of this study is to determine the effect of interaction and the main influence of vermicompost and NPK Pearl 16:16:16 on the growth and yield of celery plants. This research was carried out for four months, from August to November 2018. This research used a factorial completely randomized design (RAL) consisting of two factors, where the first factor was vermicompost fertilizer (K) consisting of 4 levels, namely 0, 60, 80, 100 g / polybag and the second factor is NPK Pearl 16:16:16 (N) fertilizer consisting of 4 levels, 0, 0.8, 1.6, 2.4 g/polybag. The observation parameters in this study were plant height (cm), relative growth rate (g), root volume (cm3), number of tillers, number of midribs, wet weight of crop (g), and age of harvest (days). The last observation data were statistically analyzed and continued with a BNJ follow-up test at the 5% level. The results showed that the interaction between vermicompost and NPK Pearl 16:16:16 fertilizer significantly affected plant height from week two to week seven, the relative growth rate in the first week, root volume, number of tillers, number of fronds and wet weight per plant. The best treatment is K3N3 (K3 vermicompost fertilizer = 100 g /polybag and NPK Pearl 16:16:16 N3 = 2,4 g/polybag), but it has no significant effect on the age of harvest and the main effect of vermicompost and NPK Pearl 16:16: 16 significantly affected plant height, relative growth rate, root volume, number of tillers, number of midribs and wet weight of the crop, with the best treatment being K3 (vermicompost fertilizer 100 g/polybag) and N3 (NPK Pearl 16:16:16 2,4 g/polybag). Keywords: Celery, Vermicompost, NPK pearl 16:16:16

scholarly journals Influence of Seed Vigor and Preplant Herbicides on Emergence, Growth, and Yield of Tomato

HortScience ◽  
1990 ◽  
Vol 25 (3) ◽  
pp. 288-291 ◽  
Author(s):  
Cosme A. Argerich ◽  
Kent J. Bradford ◽  
Floyd M. Ashton
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Seedling Emergence ◽  
Seed Vigor ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Water Control ◽  
Relative Growth ◽  
Fruit Maturity ◽  
Aged Seeds

The interactions of seed vigor with herbicides were studied with respect to seedling emergence, growth, and fruit yield of processing tomatoes (Lycopersicon esculentum Mill. cv. UC204C). Seed vigor (speed of germination) was enhanced by priming in an aerated solution of 0.12 m K2HP O4 plus 0.15 m KN O3 at 20C for 5 days followed by drying in forced air at 30C. The vigor of a second subsample of the same seed lot was reduced by controlled deterioration at 13% water content (dry-weight basis) for 6 days at 50C (aged seeds). Primed, aged, and untreated seeds were tested for their sensitivity to napropamide and metribuzin herbicides in greenhouse and field studies. A seed vigor × herbicide interaction was detected only under greenhouse conditions, where aged seeds were more sensitive than primed or untreated seeds to metribuzin. In April and May field plantings, seed vigor influenced the rate and percentage of final emergence and the earliness of fruit maturity, but had no effect on relative growth rate or total vegetative or reproductive yield. Napropamide at 4.5 and 9 kg·ha-1 and metribuzin at 0.4 and 0.8 kg·ha-1 had no effect on the rate or percentage of seedling emergence, relative growth rate, or total fruit yield. Metribuzin increased the mortality of seedlings at either application rate, and at 0.8 kg·ha-1 delayed early growth and fruit maturity in the April planting. Napropamide treatments did not differ from the water control for all characteristics and environments studied. Chemical names used: 4-amino-6-tert-butyl-3(methylthio)-1,2,4-triazin-5(4H)-one (metribuzin); 2-(α-napthoxy)-N,N-diethyl propionamide (napropamide).

Organic seaweed nano powder effect on growth and yield attributes of pigeonpea

2016 ◽  
Author(s):  
S. Ambika ◽  
K. KSujatha
Keyword(s):  
Growth Rate ◽  
Seed Yield ◽  
Foliar Spray ◽  
Growth And Yield ◽  
Higher Plant ◽  
Area Index ◽  
Yield Attributes ◽  
Relative Growth ◽  
Pod Yield ◽  
Nano Powder

In the field experiment Sargassum myricocystum extract at 1% concentration for 3 h soaking with foliar spray 5% at vegetative and flowering stages were effective by recording higher plant height, total chlorophyll content, leaf area index, crop growth rate, relative growth rate and yield attributes, such as pod yield plant-1 and seed yield ha-1 in both kharif, 2014 and rabi, 2015 seasons. The per cent increase of pod yield plant-1 and seed yield ha-1 was 13.4 and 18.3%, respectively. The other seaweeds viz., Gracilaria edulis, Caulerpa racemosa were less effective, but the effect was better than water.

Effects of Plant Density on Growth and Yield of Oil Palm

1973 ◽  
Vol 9 (2) ◽  
pp. 169-180 ◽  
Author(s):  
R. H. V. Corley
Keyword(s):  
Growth Rate ◽  
Oil Palm ◽  
Dry Matter ◽  
Plant Density ◽  
Crop Growth ◽  
Growth And Yield ◽  
Area Index ◽  
Crop Growth Rate ◽  
Matter Production ◽  
Net Assimilation

SUMMARYCrop growth rate of oil palm increases with leaf area index (LAI) to about 40 tons/ha./yr at the highest LAIs obtained. Net assimilation rate and dry matter production per palm decrease with increasing LAI, but the amount of dry matter per palm incorporated in vegetative tissues is unaffected by density. As a result the optimal LAI for oil yield is considerably below the critical LAI for maximum crop growth rate.

scholarly journals Effects Of Seed Vigor On Growth And Grain Yield Of Maize

2014 ◽  
Vol 70 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Kazem Ghassemi-Golezani ◽  
Bahareh Dalil
Keyword(s):  
Growth Rate ◽  
Field Performance ◽  
Seed Vigor ◽  
Growth And Yield ◽  
Dry Matter Accumulation ◽  
Area Index ◽  
Relative Growth ◽  
Crop Growth Rate ◽  
Maize Seeds ◽  
Emergence Percentage

Abstract Reduction in seed vigor is a consequence of seed aging which may influence field performance of crops. Thus, a field study was conducted as RCB design with 6 replicates to evaluate the effects of seed vigor on maize (cv. Ksc 301) growth and yield. A sub-sample of maize seeds was kept as control and two other sub-samples were artificially aged for 9 and 12 days. So, three seed lots (V1, V2 and V3), with different vigor were provided and sown in the field. Mean emergence time significantly increased, but mean emergence percentage decreased as seed vigor increased. The lowest leaf area index (LAI), dry matter accumulation (DMA) and crop growth rate (CGR) were obtained for plants from the lowest vigor seed lot (V3). At the later stages of growth, the highest relative growth rate (RGR) was recorded for V1 plants, followed by V2 and V3 plants. Poor stand establishment and growth of plants from V2 and V3 seed lots led to yield loss by 23.7 % and 41.5 %, respectively. These results showed that production and cultivation of high vigor seeds are necessary to ensure satisfactory field performance of maize.

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