Effects of Light, Nitrogen and Their Interaction on Grain Yield and Nitrogen, Phosphorus and Potassium Absorption inJaponicaSuper Rice

2014 ◽  
Vol 40 (7) ◽  
pp. 1235 ◽  
Author(s):  
Ya-Jiang WANG ◽  
Hai-Yan WEI ◽  
Xi-Ting YAN ◽  
Meng-Jie GE ◽  
Tian-Yao MENG ◽  
...  
Keyword(s):  
Grain Yield ◽  
Potassium Absorption ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Determination of Indigenous Nutrient Supplying Capacity of Soil Through Omission Plot Experiment for Wheat in Western Terai of Nepal

2018 ◽  
Vol 35 (1) ◽  
pp. 79-87
Author(s):  
N. Rawal ◽  
N. Khatri ◽  
C. B. GC ◽  
B. P. Chaurasiya
Keyword(s):  
Grain Yield ◽  
Small Area ◽  
Optimum Dose ◽  
Experimental Site ◽  
Wheat Growth ◽  
Wheat Cultivation ◽  
Limiting Nutrient ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The field experiment was conducted to estimate the native nutrient supplying capacity of soil in western terai of Nepal during 2013/14 and 2014/15. The experimental site consisted three areas: Pakadi VDC ward no.-3, Barrohiya of Kapilvastu district; Ramgram municipality ward no.-1, Sanda of Nawalparasi district and Tukuligadh VDC ward no.-1, Rehara of Rupandehi district. The indigenous nutrients supplying capacity of the soil was determined by establishing omission plots for wheat cultivation with six treatments each of 50 m2 and 4 farmers from each site was taken assuming one farmer as one replication. Among the six treatments, -N, -P, -K, –Zn and –B were set to estimate the inherent N, P, K, Zn and B supplying capacity of soil respectively. From two years of experiment, it has been clear that inherent N and K supplying capacity of soil in selected areas is very low. The highest grain yield of 3.33 t/ha and 2.75 t/ha was measured from fully fertilized plots in 2013/14 and 2014/15 respectively and the lowest grain yield of wheat was obtained from nitrogen missing plots in both years (1.74 t/ha and 1.51 ton/ha) followed by potassium missing plots (1.74t/ha). Farmers manage their field in a different way, so large variation was seen even in small area. Nitrogen was found to be most limiting nutrient for wheat growth followed by potassium and phosphorous in all sites. Therefore, use of optimum dose of nitrogen, phosphorus and potassium should be used for efficient nutrient uptake which ultimately increases wheat productivity.

The relationship between the yields of eight varieties of Nigerian maize and content of nitrogen, phosphorus and potassium in the leaf at flowering stage

1972 ◽  
Vol 79 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Akinola A. Agboola
Keyword(s):  
Grain Yield ◽  
Critical Level ◽  
Nutrient Content ◽  
Critical Levels ◽  
Flowering Stage ◽  
Growing Seasons ◽  
Phosphorus And Potassium ◽  
High Yielding Varieties ◽  
The Relationship ◽  
Nitrogen Phosphorus

SUMMARYStudies of the relationship between yield and content of N, P and K in the ear leaf of eight varieties of Nigerian maize, tested for three growing seasons, indicated that the varieties have different critical nutrient levels, although the values obtained for individual varieties were not significantly different from the pooled average critical level for any of the nutrients. The critical levels ranged from 2·85 to 3·19% N, 0·20 to 0·27% P and 2·06 to 2·60% K, while their pooled averages were 3·10% N, 0·23% P and 2·44% K.High ear leaf nutrient content was not a guarantee of high grain yield, and ear leaf nutrient values of low-yielding varieties were similar to those of the high-yielding varieties.

scholarly journals Effect of the placement of fertilizer on the development of spring wheat

1967 ◽  
Vol 39 (3) ◽  
pp. 148-155
Author(s):  
Erkki Aura
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Ammonium Nitrogen ◽  
Wheat Roots ◽  
Phosphorus And Potassium ◽  
Uptake Of Nutrients ◽  
Experimental Soil ◽  
Nitrogen Phosphorus ◽  
Better Than

The placement of fertilizer was studied in the field trial on a clay soil in Southern Finland. The placement of fertilizer in the depth of 8 cm gave 28 per cent greater grain yield of spring wheat, and the placement in the depth of 12 cm 26 per cent greater grain yield than the surface dressing. The growth of shoots on the soil receiving placement was much better than on the soil receiving surface dressing. The results of shoot analyses showed that the placement caused a much greater uptake of nutrients than the surface dressing. The uptake of nitrogen was relatively most increased by the placement, somewhat less that of potassium and least that of phosphorus. The ripening of wheat was speeded up by the placement, which probably was due to the better early uptake of nitrogen and to the better uptake of phosphorus by means of the placing. The superiority of the placement to the surface dressing could be explained by the distribution of nutrients in the experimental soil during the dry early part of the growth season. A great deal of fertilizer nitrogen, phosphorus and potassium remained near the surface of the soil receiving surface dressing, and plants were not able to take up nutrients from the dry surface layer. On the contrary, the placed nutrients were deeper, in moister soil and better within the reach of wheat roots. Any movement of ammonium nitrogen was not found by the used methods. Nitrate nitrogen appeared to move to a greater extent particularly in the irrigated plots.

scholarly journals Liquid organomineral fertilizer containing humic substances on soybean grown under water stress

2016 ◽  
Vol 20 (5) ◽  
pp. 408-414 ◽  
Author(s):  
Marcelo R. V. Prado ◽  
Oscarlina L. dos S. Weber ◽  
Milton F. Moraes ◽  
Carlos L. R. dos Santos ◽  
Morgana S. Tunes
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Humic Substances ◽  
Stress Condition ◽  
Water Stress Condition ◽  
Plant Emergence ◽  
Soybean Plants ◽  
Phosphorus And Potassium ◽  
Red Latosol ◽  
Nitrogen Phosphorus

ABSTRACT This study evaluated the effect of an organomineral fertilizer enriched with humic substances on soybean grown under water stress. The experiment was performed in a greenhouse using a Red Latosol (Oxisol) with adequate fertility as substrate, in which soybean plants were cultivated with and without water stress. The experimental design was randomized blocks, in a 2 x 5 factorial scheme (two moisture levels and five fertilizer doses: 0, 1, 2, 4 and 8 mL dm-3), totaling 10 treatments, with four replicates. The organomineral fertilizer was applied in the soil 21 days after plant emergence and the water regimes were established one week thereafter. The fertilizer was not able to attenuate the effects of water stress, reducing soybean grain yield by more than 50% compared with plants cultivated under no stress. Fertilizer doses caused positive response on soybean nutrition and grain yield and, under water stress condition, the most efficient dose was 5.4 mL dm-3. There were lower leaf concentrations of nitrogen, phosphorus and potassium and higher concentrations of sulfur in plants under stress. Humic substances favor the absorption of micronutrients.

scholarly journals White lupine yield under different sowing densities and row spacings

2016 ◽  
Vol 20 (10) ◽  
pp. 903-907 ◽  
Author(s):  
Antônio L. Santi ◽  
Geomar M. Corassa ◽  
Ronei Gaviraghi ◽  
Thomas N. Martin ◽  
Mateus B. Bisognin ◽  
...  
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Plant Tissue ◽  
Dry Matter ◽  
Plant Density ◽  
Row Spacing ◽  
Dry Matter Yield ◽  
White Lupine ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

ABSTRACT The study aimed to evaluate different sowing densities and row spacings on grain yield and biomass in the white lupine crop, cv. ‘Comum’. The experimental design was a randomized block in a 4 x 4 factorial scheme, with four row spacings (20, 40, 60 and 80 cm) and four sowing densities in the row (10, 15, 20 and 25 plants m-1), with four replicates. The evaluated variables were: grain yield, hundred-grain weight, fresh and dry matter and the contents of nitrogen, phosphorus and potassium in the plant tissue. The highest grain yield was obtained with row spacing of 20 cm, regardless of plant density. The density of 25 plants m-1 and row spacing of 20 cm increased the fresh and dry matter yield. The adjustment of plant density and row spacing did not affect the content of nitrogen, phosphorus and potassium in plant tissue.

Variation in grain yield, and nitrogen, phosphorus and potassium nutrition of irrigated rice cultivars grown at fertile and low-fertile soils

2018 ◽  
Vol 434 (1-2) ◽  
pp. 107-123 ◽  
Author(s):  
D. S. Kekulandara ◽  
D. N. Sirisena ◽  
P. C. G. Bandaranayake ◽  
G. Samarasinghe ◽  
M. Wissuwa ◽  
...  
Keyword(s):  
Grain Yield ◽  
Rice Cultivars ◽  
Irrigated Rice ◽  
Potassium Nutrition ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

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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