پديد آورندگان :
امين، زهرا دانشگاه شهركرد - دانشكده كشاورزي , فلاح، سيف اله دانشگاه شهركرد - دانشكده كشاورزي , عباسي سوركي،علي دانشگاه شهركرد - دانشكده كشاورزي
كليدواژه :
مديريت پايدار , گوگرد , كود گاوي , كاربرد زير سطحي , رنگدانه فتوسنتزي
چكيده لاتين :
1Introduction Garlic is the second and the most commonly used plant after onion from allium which is very important according to the food value because of its medical and mineral properties. On the other hand, macro nutrients such as nitrogen can cause better accumulation of dry matter with the development of leaf area and the efficient use of solar radiation and distribute it in the leaves and shoots. The usage of organic fertilizers such as cow manure is one of the most important nutritional strategies in the sustainable management in agricultural ecosystems. Materials and Methods The experiment was carried out in a randomized complete block design with three replications, at the research farm of agricultural college of Shahrekord University in 2015. Treatments consisted of N100P, N150P , and N200P (100,150, and 200 kg N/ha in the form of urea + phosphorus requirement, respectively); N100PS, N150PS , and N200PS (100, 150, and 200 kg N/ha in the form of urea + phosphorus requirement + sulfur requirement, respectively); BCM100, BCM100, and BCM100 ((100, 150, and 200 kg N/ha in the form of cow manure as broadcast application); SCM100, SCM100, and SCM100 ((100, 150, and 200 kg N/ha in the form of cow manure as subsurface application). In this experiment, chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, dry weight of leaf, plant height (38 , 68 and 98 days after planting ), number clove per plant, clove weight and garlic yield were measured. All analyses were performed based as randomized complete block design. The data was analyzed using one-way ANOVA and mean comparison was performed by LSD test. The F-test was considered significant at p < 0.05 between treatments for fertilizer treatment. Results and Discussion The results showed that the effects of fertilization treatments on chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, dry weight of leaf, plant height (38, 68 and 98 days after planting), number of clove plant and clove weight were significant. Treatment of 150 kg N/ha in the form o Conclusions In general it can be concluded which the subsurface application of cow manures in compared to broadcast application had the highest amount of garlic production. Also, in the highest level of nitrogen fertilizer (200 kg nitrogen per hectare), the highest yield was obtained with treatments of chemical fertilizers. However at the level of 150 kg nitrogen per hectare, manure particularly subsurface application was superior to other nitrogen resources. Thus, in order to reduce the use of chemical fertilizers in agricultural ecosystems, subsurface application of manure is recommended to suitable produce garlic plant, but if the goal is to achieve the maximum yield of garlic bulb at least 200 kg N ha-1 in the form of chemical fertilizer is required.
