نتایج جستجو برای: land allocated to growing potato
تعداد نتایج: 10686683 فیلتر نتایج به سال:
Coping with water shortages without compromising tuber yield is a majorchallenge for potato (Solanum tuberosum L.) production in northern China. In thisstudy, we used three potato cultivars with different sensitivities to drought toevaluate the effect of long-term drought stress on morphological and physiologicalcharacteristics under field conditions during three growing seasons (2009-2011).Our...
Sweet potato (Solanum tuberosum), a staple tuber crop in parts of the Sudan and Guinea savanna zone of Nigeria is known for its resistance to drought, vigorous early growth and low input requirements. Increase in population which has resulted to land shortages has led to reduction in traditional methods of maintaining soil fertility. Technologies based on combinations of organic and inorganic s...
Potato prices are not sustained by policies, and have a tendency to alter in response to production. They are seasonal crop, small changes in demand and supply lead to rather great price variations. The consumption global trend is considered by growing demand of Asia and South America especially from Middle East, Brazil and East Asia (Figure 1). However for processing the demand is mainly from ...
Potato prices are not sustained by policies, and have a tendency to alter in response to production. They are seasonal crop, small changes in demand and supply lead to rather great price variations. The consumption global trend is considered by growing demand of Asia and South America especially from Middle East, Brazil and East Asia (Figure 1). However for processing the demand is mainly from ...
The bird cherry-oat aphid Rhopalosiphum padi (L.) transmits the nonpersistent Potato virus Y (PVY) to seed potatoes. Planting a nonvirus host plant around the main crop can reduce PVY incidence, because aphids tend to land in high numbers at the edge of a field and the crop border acts as a virus sink. This study determined R. padi landing and settling preferences and reproductive rates on thre...
in recent years, there has been a growing interest among researchers to investigate the relationship betweenteacher self-efficacy and classroom behavior management, especially students misbehavior. therefore, this study aimed to comparatively investigate english and arabic teachers’ use of different behavior managementstrategies, their self-efficacy, and their success in an iranian context. th...
potato is one of the most essential nutritious food products for many people in the world. it is very important in the food basket of the iranian families as well. ardabil, isfahan and hamedan are the main potato growing provinces in iran. hamedan province ranks first with respect to yield. regarding the existing high potential in this province, an economic evaluation of this product would be i...
Potato (Solanum tuberosum L.) has relatively weak root system and requires high nitrogen fertilizer which is costly and may pose environmental pollution. This study was conducted to compare root morphological characteristics and nitrogen uptake of some potato cultivars growing in Iran. A greenhouse experiment using a completely randomized design with 3 replications and 8 potato cultivars includ...
abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...
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