Quality benefits and failures induced by agronomic treatments in wheat crop

2007 ◽  
Vol 35 (2) ◽  
pp. 1141-1144
Author(s):  
Dezső Szalay ◽  
Helga Klupács
Keyword(s):  
Wheat Crop

Herbicidal potential of Aerva javanica to control wild oat in wheat crop

2020 ◽  
Vol 51 (2) ◽  
pp. 177-194
Author(s):  
Al-Ghamdi A.M. ◽  
El-Zohri M
Keyword(s):  
Dry Weight ◽  
Soluble Carbohydrates ◽  
Wheat Crop ◽  
Aqueous Extracts ◽  
Wild Oat ◽  
Culture Experiment ◽  
Allelopathic Potential ◽  
Root Extracts ◽  
Wheat Germination ◽  
Radical Length

We investigated the phytotoxicity of desert cotton (Aerva javanica) extracts on wild oat and wheat. Aqueous extracts from A. javanica roots, leaves and inflorescences collected from Jeddah and Al-Baha regions, Saudi Arabia were used. Generally, the allelopathic potential of water extracts of A. javanica collected from Jeddah were more in inhibitory to wild oat germination and seedlings growth than those from Al-Baha. In both regions, root extracts were inhibitory to wild oat followed by leaves and inflorescences extracts. All test aqueous extracts of both regions did not inhibit the wheat germination or seedlings growth.Whreas, the wild oat germination was reduced by root extracts 58.62 %, 28.62 % leaves extracts : 32.72 %, 17.72 % and inflorescences extract 28.11 %, 12.13 % by in plants samples collected from Jeddah and Al-Baha, respectively. Wild oat radical length was inhibited by root extracts 53.27 %, 32.84 % leaves 42.35 %, 9.63 % and inflorescences extracts 22.64 %, 16.75 % in case of Jeddah and Al-Baha plants, respectively. In pot culture experiment, all treatments markedly reduced the plant dry weight and soluble carbohydrates, proteins and free amino acids contents in wild oat. The differences in the allelopathic potentials of studied A. javanica extracts were related to the qualitative variations in their phytochemicals constituents. Our results showed that A. javanica extracts could be safely used to control wild oat growth in wheat fields after more detsaled research..

Economics of Fertilizer Application to Wheat Crop: The Results of a Survey in Lyallpur District (Notes and Comments)

1970 ◽  
Vol 10 (1) ◽  
pp. 88-99
Author(s):  
Barkat Ali Quraishi ◽  
Muhammad Jameel Khan
Keyword(s):  
Agricultural Production ◽  
Agricultural Research ◽  
Fertilizer Application ◽  
Wheat Crop ◽  
Fertilizer Response ◽  
Fertilizer Use ◽  
Reliable Knowledge

Reliable knowledge about the contribution of various factors responsible for increasing agricultural production is indispensable for planning. This holds particularly for the fertilizer use, which has been recognized as one of the quickest and, perhaps, the cheapest means for increasing agricultural produc¬tion. In Pakistan the emphasis on planned development is gaining momentum and for this purpose more data and fuller information on fertilizer response are becoming increasingly essential. The Agricultural Research Stations in the country have been conducting experiments with a view to determining the extent to which the cropped yield may increase due to the application of fertilizer. But such experiments, because of their somewhat controlled nature in respect of certain factors, obviously can¬not tell us with a desired measure of accuracy as to what is actually happening at millions of private farms throughout the country. And, as such, the planning in this regard is apt to be wrong.

SOUTHERN CHERNOZEMS FERTILITY REPRODUCTION IN NORTHERN KAZAKHSTAN

2020 ◽  
Keyword(s):  
Crop Rotation ◽  
Humus Content ◽  
Steppe Zone ◽  
Perennial Grasses ◽  
Wheat Crop ◽  
Mineral Fertilizers ◽  
Northern Kazakhstan ◽  
Dry Steppe ◽  
Positive Balance ◽  
High Doses

Fertility reproduction features of southern carbonate chernozems in the conditions of the dry-steppe zone of Northern Kazakhstan (Shortandinsky district of Akmola region) are studied. We studied the changes of humus content in the model micro plot experience. Various variants of the experiment with non-fallow and dump steam without fertilizers, grain crops with different doses of mineral fertilizers, manure, as well as with straw and sideral crops (pea-oat mixture, Donnik) are laid down. The introduction of rotted manure in small doses of 20 t / ha did not provide an increase in humus during crop rotation. When adding 40 and 80 t / ha of manure to the fallow field, it allowed to increase the humus content by 0.24 and 0.18 % of the initial amount. The introduction of sideral steam and perennial grasses into crop rotation enhanced the processes of humification and provided a positive balance of humus. In this version of the experiment, the amount of humus increased by 0.10-0.13 %. The greatest accumulation of organic matter occurred when using melilot: the increase in humus was 0.39 %. Long-term cultivation of permanent wheat crop in one field, even with high doses of mineral fertilizers, does not provide significant reproduction of soil fertility. The application of mineral fertilizers does not contribute to the increase of humus in the soil. The greatest decrease in humus content in southern chernozems is observed in the permanent dump and waste-free pair-0.11 and 0.13% over a 6-year period of observations.

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