Meta‐analysis of drought and heat stress combination impact on crop yield and yield components

This study aimed to reveal changes in morphological and physiological characters during growth and mature stages of rice plants in response to salinity stress and growth promoters. Salinity stress caused a decrease in vegetative growth, yield and yield components, while growth substances enhanced the leaf area and crop yield of rice plants under salinity stress. It could be concluded that growth promoters can partially alleviate the harmful effect of salinity stress on rice.

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Characterization of heat tolerance in wheat cultivars and effects on production components

Revista CERES ◽

10.1590/0034-737x201562020009 ◽

2015 ◽

Vol 62 (2) ◽

pp. 191-198 ◽

Cited By ~ 7

Author(s):

Adérico Júnior Badaró Pimentel ◽

João Romero do Amaral Santos de Carvalho Rocha ◽

Moacil Alves de Souza ◽

Guilherme Ribeiro ◽

Carolina Ramalho Silva ◽

...

Keyword(s):

Heat Stress ◽

Grain Yield ◽

High Temperatures ◽

Yield Components ◽

Developmental Stages ◽

Human Consumption ◽

Wheat Cultivars ◽

Yield And Yield Components ◽

Heat Tolerant

Abstract: There is a need for heat tolerant wheat cultivars adapted to the expansion of cultivation areas in warmer regions due to the high demand of this cereal for human consumption. The objective of this study was to evaluate the effect of high temperatures on grain yield and yield components of wheat and characterize heat tolerant wheat genotypes at different development stages. The genotypes were evaluated in the field with and without heat stress. High temperatures reduced the number of spikelets per spike (21%), number of grains per spike (39%), number of grains per spikelet (23%), 1000-grain weight (27%) and grain yield (79%). Cultivars MGS 1 Aliança, Embrapa 42, IAC 24-Tucuruí and IAC 364-Tucuruí III are the most tolerant to heat stress between the stages double ridge and terminal spikelet; MGS 1 Aliança, BRS 264, IAC 24-Tucuruí, IAC 364-Tucuruí III and VI 98053, between meiosis and anthesis; and BRS 254, IAC-24-Tucuruí, IAC-364-Tucuruí III and VI 98053, between anthesis and physiological maturity. High temperatures reduce grain yield and yield components. The number of grains per spike is the most reduced component under heat stress. The genotypes differed in tolerance to heat stress in different developmental stages.

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Impact of soil fertility management practices on a major insect pest infestation and yield of beans (phaseolus vulgaris L.) in Taita district, Kenya

African Journal of Food, Agriculture, Nutrition and Development ◽

10.18697/ajfand.60.12550 ◽

2013 ◽

Vol 13 (60) ◽

pp. 8340-8350

Author(s):

WN Ochilo ◽

◽

GH Nyamasyo ◽

JH Nderitu ◽

◽

...

Keyword(s):

Soil Fertility ◽

Common Bean ◽

Crop Yield ◽

Yield Components ◽

Cow Manure ◽

Nutrient Depletion ◽

Soil Fertility Management ◽

Fertility Management ◽

Yield And Yield Components ◽

The Common

The common bean is an important food and cash crop in Eastern, Central and Southern Africa. It provides food for more than 100 million people and is a critical source of income for rural households. Common bean yields, however, have declined in the last ten years. This decline is the result of poor soil fertility and nutrient depletion as well as high incidences of insect pests, key among them being the bean stem maggot (BSM). To address soil nutrient depletion and the accompanying declining agricultural productivity, integrated soil fertility management (ISFM) has been adapted as a framework for enhancing crop productivity through combining fertilizer use with other soil fertility management technologies, adapted to local conditions. The current study evaluated the influence of soil fertility treatments on yield and yield components of the common bean. Additionally, to establish the potential links between soil fertility and crop protection, the effect of ISFM interventions on the incidence of the BSM was also assessed. The experiment was carried out in Taita District where agriculture contributes 95% to household income with very little or no fertility inputs in farms. Bean variety Mwezi moja was sown during the wet cropping season. Farm plots were amended with Mavuno fertilizer (a blend of fertilizer containing 11 nutrients); Triple Superphosphate fertilizer with Calcium Ammonium Nitrate (TSP + CAN); cow manure; Trichoderma inoculant; Trichoderma inoculant with cow manure combination; Mavuno fertilizer with Trichoderma inoculants combination; and control (untreated check). Field survey was conducted four weeks after bean emergence to determine the incidence and prevalence of the BSM. Plant survival: dry-seed and and bean straw weight were used as criteria for assessing crop yield. Yield and yield components of common bean were significantly affected by addition of soil ammendments, with Mavuno fertilizer + Trichoderma inoculant improving yield by 52.9%. However, the influence of the soil ammendments on the BSM incidence was minimal. These findings point to the fact that soil fertility management interventions increase crop yield. Nevertheless, to maximise yield, there is a strong need to adopt agroecological strategies that not only optimise soil fertilization but also incorporate a pest management dimension.

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Chlorophyll fluorescence, yield and yield components of bread wheat affected by phosphate bio-fertilizer, zinc and boron under late-season heat stress

Photosynthetica ◽

10.1007/s11099-018-0829-1 ◽

2018 ◽

Vol 56 (4) ◽

pp. 1287-1296 ◽

Cited By ~ 6

Author(s):

H. R. Eisvand ◽

H. Kamaei ◽

F. Nazarian

Keyword(s):

Heat Stress ◽

Chlorophyll Fluorescence ◽

Bread Wheat ◽

Yield Components ◽

Fluorescence Yield ◽

Late Season ◽

Yield And Yield Components ◽

Chlorophyll Fluorescence Yield

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PREDICTING CROP YIELD AND YIELD COMPONENTS OF SPRAY CHRYSANTHEMUM (CHRYSANTHEMUM MORIFOLIUM RAMAT) IN RELATION TO WEATHER VARIABLES

Acta Horticulturae ◽

10.17660/actahortic.2012.937.39 ◽

2012 ◽

pp. 321-328

Author(s):

S.S. Gantait ◽

P. Pal ◽

A. Saha

Keyword(s):

Crop Yield ◽

Yield Components ◽

Chrysanthemum Morifolium ◽

Weather Variables ◽

Yield And Yield Components ◽

Chrysanthemum Morifolium Ramat

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Evaluation of Wheat Germplasm Against Salinity

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v43i2.966 ◽

1970 ◽

Vol 43 (2) ◽

pp. 223-234

Author(s):

Farida Begum ◽

M Saifuzzaman ◽

W Sultana

Keyword(s):

Plant Height ◽

Crop Yield ◽

Yield Components ◽

Salinity Gradient ◽

Seedling Emergence ◽

Saline Environment ◽

Key Words Wheat ◽

Salinity Gradients ◽

Yield And Yield Components ◽

Wheat Lines

Fifteen wheat lines/ varieties were tested under artificial saline environment in the year 2006-07 for the study of salt tolerance. Four salinity gradients, 0.38, 3.76, 8.8 and 12.0 dS-m were used. Seedling emergence, plant height and crop yield were found to be affected by salinity gradient. The varieties/lines Gaurav, Shatabdi, Sufi, Bijoy. CB-38, CB-60 and CB-78 showed better performance as evaluated on the basis of plant height, yield and yield components. These lines can thus be selected for further investigation in the coastal saline areas. The decrease in growth as attributed to the accumulation of salinity induced increase in Na+ and decrease in K+ content. This decrease in growth ultimately caused a decrease in yield. Key words : Wheat, Salinity, Crop yield, Na+, K+ content.DOI: 10.3329/bjsir.v43i2.966 Bangladesh J. Sci. Ind. Res. 43(2), 223-234, 2008

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