Author: Akihiko Kamoshita
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 238

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Author: H. R. Lafitte
Publisher:
ISBN:
Category :
Languages : en
Pages : 324

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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 898

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Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1732

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Author: Vithanage Upali de Silva Jayasuriya
Publisher:
ISBN:
Category : Hybrid sorghum
Languages : en
Pages : 194

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Author:
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ISBN:
Category : Plant breeding
Languages : en
Pages : 1648

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Author:
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ISBN:
Category : Agriculture
Languages : en
Pages : 954

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Author:
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ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 724

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Author: V. B. Ogunlela
Publisher:
ISBN:
Category :
Languages : en
Pages : 203

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Two greenhouse and three field experiment were conducted to study the effects of elevated night temperatures on the yield and growth of a grain sorghum (Sorghum bicolor (L.) Moench) hybrid. The genotype used in these investigations was the 'RS 671' (Redlan x Tx 415), an open-pedigree temperate-adapted grain sorghum. The phenological growth phase during which temperature treatments were imposed was the panicle development (GS-2) period. Experiment I, II (greenhouse) and III (field) were designed to determine the response of grain sorghum to two elevated night temperatures and the growth stage during GS-2 period when the plant is most sensitive to elevated temperatures. Experiment IV and V (field) were conducted with the same objectives as those for Experiment I, II and III and also to determine the effects of artificial preconditioning on the plant's response to elevated night temperatures. Experiments I - Plants were exposed to 26.5 and 32 C night temperatures at 4-day durations commencing from florest differentiation through bloom. The two elevated night temperatures caused significant reduction in grain yield and yield components except seed size that was enhanced (12%) by the 32 C treatment. Approximately 19%, 21%, 24% and 20% reductions in panicle dry weight, grain yield per plant, number of seeds per panicle and grams of grain/GS-3 day/plant, respectively, were caused by the 32 C treatment. The 26,5 C treatment also caused reduction in these variables but to much lesser degrees. Numbers of days to (...).

Author: Y.P. Abrol
Publisher: Springer Science & Business Media
ISBN: 9401702896
Category : Science
Languages : en
Pages : 424

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Sulphur (S) plays a pivotal role in various plant growth and development processes being a constituent of sulphur-containing amino acids, cysteine and methionine, and other metabolites viz., glutathione and phytochelatins, co-factor of enzymes which contribute to stress repair and amelioration of heavy metal toxicity. Besides, a number of S-containing components are biologically active and, thus, a source for use as medicinal value. The basic global issue before the agricultural scientist and world community is to evolve cultivars and develop methodologies for efficient use of inputs to enhance agricultural productivity. This is particularly true of the developing countries which are going to see maximum rise in population with changing food demands and declining availability of land. Amongst the inputs, nutrients play a crucial role. The major requirement is for N, P and K followed by several micro-nutrients. In this context reports of world-wide S deficiency in the agricultural systems are relevant. The reasons are many. Broadly speaking reduction inS emission, use of S-free N, P and K fertilizers and higher biomass production contributed the maximum. Despite the need for sulphur as an essential plant nutrient and the substantial returns expected from its use, very little attention has been given to fill the gap between supply and demand of S.