scholarly journals Effect of organic mulch and LEDs light colors on green bean plants (Phaseolus vulgaris L.)

2021 ◽  
Vol 3 (1) ◽  
pp. 027-044
Author(s):  
Fatma S Moursy
Keyword(s):  
Soil Temperature ◽  
Vegetative Growth ◽  
Bare Soil ◽  
Green Bean ◽  
Growth And Yield ◽  
Organic Mulch ◽  
Bean Plants ◽  
Maize Straw ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Studying the positive role of applying organic mulch and different colors of LEDs light, on the growth and yield of green bean plants, were carried out during 2019/2020 and 2020/2021 seasons, at a privet farm within Suez Governorate. Seedlings of Bronco cultivar were transplanted at the 15th of October of both seasons. Two types of organic mulch i.e., chopped maize straw and chopped rice straw, addition to bare soil (control) were tested as a soil mulch treatment (factor 1). In addition, LEDs light colors i.e., red, blue and "red + blue" and without LED light were also tested (factor 2). Finally, interaction between both studied factors was also studied. Studied factors were arranged in split plot design with three replicates. Organic soil mulches were arranged in the main plots. However, LEDs light colors were arranged within the sub main plots. Vegetative growth parameters i.e., plant height, number of leaves/plant, stem diameter, number of branches/plant, fresh and dry weight of plants were measured. Moreover, percentages of nitrogen, phosphorus and potassium contents in leaves, as well as, chlorophyll reading (SPAD) were also measured. In addition, pod characteristics i.e., number of pods/plant, average pod weight and fiber content in pods, were studied as well. Finally, both early and total yield of green bean were studied. Changes in soil temperature under organic mulch treatments, as well as, bare soil were daily measured during the growing seasons. Results indicated that, in general, applying tested types of organic mulch modified soil temperature. Moreover, both tested factors were enhanced measured characters of vegetative growth, leaves content of nitrogen, phosphorus and potassium, as well as yield and its components. Furthermore, both treatments of chopped maize straw and "red + blue" LEDs light, as well as the interaction between both treatments were the most suitable for increasing productivity and quality of green bean plants.

scholarly journals 534 PB 014 QUANTIFICATION OF THE SPECTRAL PROPERTIES OF POLYETHYLENE MULCHES WHICH INFLUENCE SOIL TEMPERATURE AND BELL PEPPER PRODUCTION

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 508a-508
Author(s):  
Heather Hatt Graham ◽  
Margaret J. McMahon ◽  
Dennis R. Decoteau ◽  
Dale E. Linvill
Keyword(s):  
Soil Temperature ◽  
Vegetative Growth ◽  
Spectral Properties ◽  
Bell Pepper ◽  
Growth And Yield ◽  
Photon Flux ◽  
Reflection And Transmission ◽  
Early Afternoon ◽  
Clear Plastic ◽  
Black Plastic

Commercially available polyethylene mulches were evaluated for their influence on spectral properties (absorption, reflection, and transmission) and soil temperature during the growing season. Vegetative growth and yield of bell pepper (Capsicum annuum cv. Keystone Resistant Giant No. 3) plants were evaluated for each mulch. Black plastic had the greatest absorption (95%) of photosynthetic photon flux (PPF; 400-700 nm). White plastic had the greatest reflection (6575%) of PPF and blue (400-500 nm) light. The Alor selective mulch had the greatest reflective far-red/red ratio (730-740/640-650 nm) of light. Clear plastic had the greatest transmission (90%) of PPF and blue light. Soil temperature was coolest under the white mulch (32 C) and warmest under the clear mulch (52 C) when measured at maximum soil temperature in the early afternoon (1400 to 1800 hrs). Vegetative growth and yield were greatest for plants grown on the white mulch treatment and lowest for plants grown on the clear mulch treatment.

Effect of Different Levels of Nitrogen, Phosphorus and Potassium on the Growth and Yield of Cabbage

2002 ◽  
Vol 1 (5) ◽  
pp. 548-549 ◽  
Author(s):  
Razaullah Khan ◽  
Sher Ahmed . ◽  
Salimullah Khan . ◽  
Fayaz Ahmed . ◽  
Meer Zaman . ◽  
...  
Keyword(s):  
Growth And Yield ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

scholarly journals Early fruiting in Synsepalum dulcificum (Schumach. & Thonn.) Daniell juveniles induced by water and inorganic nutrient management

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 399 ◽  
Author(s):  
Dèdéou Apocalypse Tchokponhoué ◽  
Sognigbé N'Danikou ◽  
Iago Hale ◽  
Allen Van Deynze ◽  
Enoch Gbènato Achigan-Dako
Keyword(s):  
Water Supply ◽  
Growth Traits ◽  
Relative Survival ◽  
Growth And Yield ◽  
Juvenile Period ◽  
Crop Species ◽  
Slow Growth Rate ◽  
Pharmaceutical Industries ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Background.The miracle plant,Synsepalum dulcificum(Schumach. & Thonn.) Daniell is a native African orphan crop species that has recently received increased attention due to its promise as a sweetener and source of antioxidants in both the food and pharmaceutical industries. However, a major obstacle to the species’ widespread utilization is its relatively slow growth rate and prolonged juvenile period.Method.In this study, we tested twelve treatments made up of various watering regimes and exogenous nutrient application (nitrogen, phosphorus and potassium, at varying dosages) on the relative survival, growth, and reproductive development of 15-months-oldS. dulcificumjuveniles.Results.While the plants survived under most tested growing conditions, nitrogen application at doses higher than 1.5 g [seedling]-1was found to be highly detrimental, reducing survival to 0%. The treatment was found to affect all growth traits, and juveniles that received a combination of nitrogen, phosphorus, and potassium (each at a rate of 1.5 g [seedling]-1), in addition to daily watering, exhibited the most vegetative growth. The simple daily provision of adequate water was found to greatly accelerate the transition to reproductive maturity in the species (from >36 months to an average of 23 months), whereas nutrient application affected the length of the reproductive phase within a season, as well as the fruiting intensity.Conclusions.This study highlights the beneficial effect of water supply and fertilization on both vegetative and reproductive growth inS. dulcificum. Water supply appeared to be the most important factor unlocking flowering in the species, while the combination of nitrogen, phosphorus and potassium at the dose of 1.5 g (for all) consistently exhibited the highest performance for all growth and yield traits. These findings will help intensifyS. dulcificum’s breeding and horticultural development.

Fertilizer responses with non-irrigated Shiraz grapevines, 1944-1966

1970 ◽  
Vol 21 (2) ◽  
pp. 243 ◽  
Author(s):  
HW Tulloch ◽  
WB Harris
Keyword(s):  
South Australia ◽  
Growth And Yield ◽  
Yield Response ◽  
Positive Interaction ◽  
Severe Reduction ◽  
Factorial Trial ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus

A long-term factorial trial with nitrogen, phosphorus, and potassium fertilizers was started at Nuriootpa Viticultural Station, South Australia on the grape cultivar Shiraz in 1944. Results show a significant yield response to superphosphate. Long-term applications of ammonium sulphate resulted in severe reduction of vine growth and yield, and a significant lowering of soil pH. No direct response to potassium sulphate was obtained except in one year, but a positive interaction between potassium and phosphorus occurred in some years. An analysis of the components of yield in 1964 showed that the increase in yield with superphosphate was due to an increase in the number of berries per bunch. The nitrogen, phosphorus, and potassium contents of petioles were determined and related to available reference standards.

A study of mole drainage with simplified cultivation for autumn-sown crops on a clay soil

1984 ◽  
Vol 102 (3) ◽  
pp. 583-594 ◽  
Author(s):  
F. B. Ellis ◽  
D. G. Christian ◽  
P. L. Bragg ◽  
F. K. G. Henderson ◽  
R. D. Prew ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Water Table ◽  
Soil Surface ◽  
Distribution Patterns ◽  
Growth And Yield ◽  
Compact Layer ◽  
Area Index ◽  
Matter Production ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

SummaryGrain yield of winter barley in the year preceding the experiment (1978) was relatively uniform over the site. In 1978–9 after the drainage treatments had been introduced, growth and yield of winter wheat were not affected by drainage, probably due to a compact layer at 20 cm that prevented the mole drains from controlling the water table (Harris et al. 1984).In 1979–80 after disrupting this layer, root growth in undrained plots during the winter and spring was severely restricted by the presence of a water table 20 cm from the soil surface, although some root axes were able to grow down to 75–100 cm below the soil surface. The differences in root distribution patterns between drained and undrained plots disappeared after the water table declined in April. Uptake of nitrogen, phosphorus and potassium were less on undrained plots. Dry-matter production, leaf area index and peak number of tillers was also depressed, so that the yield of winter wheat was 0·74 t/ha greater on the drained treatment; the grain from the drained plots contained fewer impurities and weed seeds.

scholarly journals Effect of Dual Inoculation of Azolla on the Growth and Yield Paramaters of Rice in Dhaijan, Jhapa

2007 ◽  
Vol 7 ◽  
pp. 85
Author(s):  
N. Sapkota ◽  
B. N. Prasad
Keyword(s):  
Grain Yield ◽  
Science And Technology ◽  
Potassium Content ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Straw Yield ◽  
Dual Inoculation ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The present work was carried out aiming to determine the most appropriate method of application of Azolla as biofertilizer in the rice and to assess its impact on the yield and yield attributes of rice. Azolla growth as a monocrop and incorporated before rice transplantation followed by double inoculation gave encouraging results. Grain yield has been recorded up to 5.1t/ha which is 15.9% increment over control. Straw yield was up to 4.8t/ha which is 26.3% increase over control. Inoculation of Azolla seven days after rice transplantation followed by incorporation 30 days after inoculation and reinoculated 7 days after incorporation (T6) increased grain yield up to 5 t /ha which is 13.6 % increase over control and straw yield up to 4.8 t/ha which is 26.3% increase over control. In all plots treated with Azolla, increase in nitrogen, phosphorus and potassium content in leaf, straw and panicle has been recorded. Azolla incorporation plus application of 15 kg/ha urea as top dressing (T4) increased grain yield by 11.3% over control. Twice cropping of Azolla, once as a monocrop and once as an intercrop increased grain yield by 9.1% over control. Among the Azolla treated sets, lowest grain yield of 4.7 t/ha (6.8% increase over control) was obtained from the sets where Azolla was grown once as a monocrop (T3). <i>Nepal Journal of Science and Technology</i> Vol. 7, 2006

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