In order to investigate the phenology of henna plant ecotypes with different amounts of nitrogen fertilizer and low irrigation, an experiment was carried out in the form of completely random chopped plots in 4 replications in the field and in the crop year 2018-2019. Low irrigation stress is the main factor (100%, 75% and 50% of the plant's water requirement), nitrogen is the secondary factor (including 50, 100 and 150 kg). Net nitrogen per hectare was investigated at three levels and sub-factors (including Bami, Bushehri and Rudbari) and the results of analysis of variance showed that all three factors had a significant effect on leaf weight, total, dry leaf weight and total dry weight at a statistical level of 1%. With Paying attention to the results of this research and the importance of using drought-resistant varieties and ecotypes using 150 nitrogen per hectare, 9.77 and 2.37 tons, respectively, were determined. Optimum management of fertilizer consumption in order to preserve the environment and increase the effective substance of henna plant cultivated in Bami ecotype under drought stress of 75% water requirement and consumption of 100 kg of nitrogen per hectare and without stress using henna leaf of Bari ecotype with consumption of 150 kg of nitrogen per hectare It is recommended in the same area and conditions. Manuscript profile

Potato is one of the most important crops in the world. This plant is in the third place after rice and wheat in terms of consumption in the world, for this reason this plant is considered as one of the plants that protect food security. Low soil fertility is the most important limitation for potato production. Farmers should deal with this problem by using mineral fertilizers that improve soil productivity. Using the right amount of NP fertilizer is the main factor in potato production. A field experiment was conducted in the main cropping season of 2022 and 2023 to investigate the optimal amount of NP on potato tuber yield in Jiroft region. The treatments including four levels of nitrogen (0, 46, 92, 138 kg/ha) and three levels of phosphorus (0, 46, 69 kg/ha) were factorially combined in a randomized complete block design with three replications. The results of the study showed that the use of 92 kg of nitrogen per hectare is recommended in Jiroft. Even if P application does not affect potato tuber yield, 23 kg/ha of P fertilizer should be applied to maintain soil fertility. Manuscript profile

In order to investigate the phenology of henna plant ecotypes with different amounts of nitrogen fertilizer and low irrigation, an experiment was carried out in the form of completely random chopped plots in 4 replications in the field and in the crop year 2018-2019. Low irrigation stress is the main factor (100%, 75% and 50% of the plant''s water requirement), nitrogen is the secondary factor (including 50, 100 and 150 kg). Net nitrogen per hectare was investigated at three levels and sub-factors (including Bami, Bushehri and Rudbari) and the results of analysis of variance showed that all three factors had a significant effect on leaf weight, total, dry leaf weight and total dry weight at a statistical level of 1%. With Paying attention to the results of this research and the importance of using drought-resistant varieties and ecotypes using 150 nitrogen per hectare, 9.77 and 2.37 tons, respectively, were determined. Optimum management of fertilizer consumption in order to preserve the environment and increase the effective substance of henna plant cultivated in Bami ecotype under drought stress of 75% water requirement and consumption of 100 kg of nitrogen per hectare and without stress using henna leaf of Bari ecotype with consumption of 150 kg of nitrogen per hectare It is recommended in the same area and conditions. Manuscript profile

Objective: This study aimed to investigate the effect of sodium nitroprusside foliar application (SNP) on the performance of henna (Lawsoniainermis L.) ecotypes under drought stress conditions.

Methods: The experiment was conducted using a completely randomized design with a factorial arrangement. The factors included three henna ecotypes (Shahdad, Bam andRudbar-e-Jonub), three levels of irrigation (100, 75 and 50% of field capacity) and spraying (control and sodium nitroprusside). Various growth and physiological parameters were measured to assess the performance of henna under different treatments.

Results:With a decrease in water level, the amount of photosynthetic pigments, growth indices, net photosynthesis, and ultimately leaf dry matter yield decreased. However, the application of sodium nitroprusside spray treatment was able to significantly increase leaf surface index, product growth rate, net photosynthesis, and leaf dry matter yield compared to the control treatment at irrigation levels of 75% and 50% of the agricultural capacity. Among them, the highest percentage increase in the measured traits was related to the Shahdad genotype.

Conclusions: This study provides valuable insights into the potential of SNP foliar application in enhancing the performance of henna plants under drought stress conditions. The findings highlight the importance of selecting suitable henna ecotypes for cultivation in regions prone to drought stress. Additionally, the study contributes to the limited literature on the use of SNP as a potential tool for improving plant tolerance to drought stress. Bottom of Form

 

Manuscript profile