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Effect of crop plant density on critical period of weed competition in potato

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Influence of weed competition on potato growth, production and radiation use efficiency

Effect of weed competition on crop dry matter started about 40 DAE and about 90 DAE reached its maximum, and weeds competition decreased dry matter accumulation, leaf area index, crop growth rate, Leaf area index duration, light absorption, light extinction coefficient and radiation use efficiency (RUE) of potato.
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Effect of different planting dates and defoliation on the properties of sugar beet (Beta vulgaris L.).

Investigation of the effect of defoliation on the quantitative and qualitative characteristics of sugar beet in Motahari research station revealed that different planting dates have significant effect on the sugar percentage of root and white sugar yield.
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Alternate furrow irrigation affects yield and water-use efficiency of maize under deficit irrigation

Good potential of AFI is indicated for development of water-saving strategies for maize production in semi-arid climates and the role of carbohydrate remobilisation in kernel filling was greater under AFI consistently among irrigation regimes.
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ENVIRONMENTAL MATERNAL EFFECTS ON DROUGHT AND SALINITY TOLERANCE OF IRANIAN KNAPWEED (CENTAUREA DEPRESSA M. BIEB.) AT GERMINATION AND SEEDLING GROWTH STAGE

Results showed that germination percentage, radical and shoot length, and seedling dry weight of both Centaurea depressa populations decreased significantly, with increasing intensity of drought and salinity, however results showed a greater salinity and drought tolerance of Ahvaz population.

Residents Attitudes towards Tourism Development: A Case Study of Niasar, Iran

Tourism is one of the largest and fasted growing industries in the world. It is an increasingly important source of income, employment and wealth in many countries. Its rapid expansion has, however,…

Effect of pre-sowing and nitrogen application on forage quality of silage corn

In order to determine the best pre-sowing treatments and nitrogen rates on forage quality traits in silage corn (SC 704), a field experiment was conducted in a split plot based on a randomized…

Interaction effect of CO2 enrichment and nutritional conditions on physiological characteristics, essential oil and yield of lemon balm (Melissa officinalis L.).

Carbon dioxide enrichment and nutritional improvement can increase photosynthesis and growth of different crops. The aim of the present study was to assess interaction effects of CO2 enrichment and…
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Suitability and 'benefits from intercropped sorghum-amaranth under partial root-zone irrigation.

When sufficient irrigation is available, intercropping of sorghum and amaranth can considerably improve yield and quality of emergency feed, however, the benefits from intercropped faded under the two partial root-zone irrigation methods used in this study.
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Effects of Salt and Drought Stresses on Germination and Seedling Growth of Swallow Wort (Cynanchum acutum L.)

Control treatment was better for radicle and hypocotyle length as well as seedling fresh weight and seed germination than the other treatments considerably, and drought and salinity stresses effect essence on germination and early seedling growth was different.
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