Influence of seed soaking and foliar spray of stress mitigating bio-regulators on growth and yield attributes, yield and economics of durum wheat under conserved soil moisture condition

The decomposition of oxamyl in four soils under moist conditions was measured in incubation experiments at 15 deg C. Half-lives of oxamyl in soils with moisture tensions of approx. -9.8 X 103 Pa were 13 days in a clay loam, 14 days in a loamy sand, 34 days in a peaty sand and 39 days in a humic loamy sand. The rate of oxamyl decomposition in the clay loam decreased with decreasing soil moisture content down to values for below wilting point. Oxamyl decomposition in the humic loamy sand decreased with decreasing soil moisture content, but increased sharply in the very dry range. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Soil moisture obtained through remote sensing to assess drought events

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v24n9p575-580 ◽

2020 ◽

Vol 24 (9) ◽

pp. 575-580 ◽

Cited By ~ 1

Author(s):

Tiago de M. Inocêncio ◽

Alfredo Ribeiro Neto ◽

Alzira G. S. S. Souza

Keyword(s):

Climate Change ◽

Soil Moisture ◽

Condition Index ◽

Semiarid Region ◽

Moisture Index ◽

Moisture Condition ◽

Soil Moisture Condition ◽

Northeast Region ◽

Promising Tool ◽

Soil Moisture Index

ABSTRACT The sequence of drought events in the Northeast of Brazil in recent decades raises attention to the importance of studying this phenomenon. The objective of this study was to evaluate the duration and severity of drought events from 1988 to 2018 in hydrographic basins of the state of Pernambuco, Brazil, using two drought indexes: Standardized Soil Moisture Index and Soil Moisture Condition Index, calculated based on data of the Soil Moisture Project of the European Space Agency’s Climate Change Initiative. The duration of the droughts was determined considering the months between their beginning and end, and their severity was based on the area formed in the graph between the curve of the index and the x-axis. The soil moisture database showed to be a promising tool for the analysis and monitoring of drought events in the Northeast region of Brazil, mainly for analysis and monitoring of drought events. The indexes allowed the evaluation of the drought phenomenon over the 30-year period, showing increases from 2012, which were more pronounced in the Semiarid region. The hydrographic basins responded differently to a same event, depending on the climate characteristics of the region in which they are located. Consecutive years with rainfall below the historical mean increased the magnitude of the droughts, as found for the 2012-2017 period, in which the indexes presented delays to return to more favorable values, showing the effect that one drought year has on the following year.

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Soil moisture condition and soil nitrogen dynamics in a pure Alnus japonica forest in Korea

Landscape and Ecological Engineering ◽

10.1007/s11355-010-0119-y ◽

2010 ◽

Vol 7 (1) ◽

pp. 93-99 ◽

Cited By ~ 1

Author(s):

Kyung Won Seo ◽

Su Jin Heo ◽

Yowhan Son ◽

Nam Jin Noh ◽

Sue Kyoung Lee ◽

...

Keyword(s):

Soil Moisture ◽

Soil Nitrogen ◽

Nitrogen Dynamics ◽

Alnus Japonica ◽

Moisture Condition ◽

Soil Moisture Condition ◽

Soil Nitrogen Dynamics

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Effect of nutrient management on productivity and economics of soybean

International Journal of Agricultural Invention ◽

10.46492/ijai/2017.2.2.17 ◽

2017 ◽

Vol 2 (02) ◽

pp. 206-209

Author(s):

Y. A. Bhosale ◽

D. P. Pacharne

Keyword(s):

Nutrient Management ◽

Block Design ◽

Foliar Spray ◽

Growth And Yield ◽

Silty Clay ◽

Yield Attributes ◽

Net Returns ◽

Randomized Block Design ◽

Stover Yield ◽

Economic Indices

A field experiment was conducted during kharif season of 2015 on silty clay loam soil at MPKV, Rahuri (MS), to study the varying nutrient management levels on productivity and economics of different soybean varieties. The experiment was laid out in factorial randomized block design with 15 combinations of three varieties (KDS-344, JS-9305 and KS-103) and five nutrient management levels ( GRDF, 75% GRDF + 0.5% foliar spray of grade IInd at 30 and 45 DAS, 100% GRDF + 0.5% foliar spray of grade IInd at 30 and 45 DAS, N4: 125% GRDF + 0.5% foliar spray of grade IInd at 30 and 45 DAS and 50:75:30 N, P2O5, K2O kg ha-1 + 5 tons FYM ha-1. The variety KDS-344 and application of nutrient management dose 125% GRDF + 0.5 Grade IInd foliar spray at 30 and 45 DAS recorded significantly the highest growth and yield attributes viz., plant height (cm), number of branches, number root of nodules, number of pod plant-1 and weight of seeds plant-1 (g). The variety KDS-344 recorded highest grain and stover (3.66 and 4.64 t /ha) yield and highest economic indices like cost of cultivation (40,623), net monetary returns (87355) and net returns per rupee invested (3.17). The grain yield (4.34 t/ha) and stover yield (4.53 t/ha) of soybean was significantly higher by application of fertilizer dose of 125% GRDF + 0.5% Grade IInd foliar spray at 30 and 45 DAS than rest of treatments, but it was also at par with 75% GRDF + 0.5 Grade IInd foliar spray at 30 and 45 DAS and 100% GRDF + 0.5% Grade IInd foliar spray at 30 and 45 DAS. Similarly, variety KDS-344 and application of nutrient levels of 75 % GRDF + 0.5 % Grade IInd foliar spray at 30 and 45 DAS recorded the highest net returns (82756) and net returns per rupee invested (3.24) in soybean due to reduce in cost of cultivation (36931) and nutrient losses.

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