Agriculture
Mohhamad Reza Hrivandi; Parviz Rezvani Moghaddam; Surur Khorramdel; A. A. Moayedi
Abstract
In order to investigate the effect of spreading time and application rates of wheat straw as mulch on Saffron corm and flower yield, a field experiment was conducted as factorial layout based on randomized complete block design with three replications at Gonabad Agricultural and Natural Resources Research ...
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In order to investigate the effect of spreading time and application rates of wheat straw as mulch on Saffron corm and flower yield, a field experiment was conducted as factorial layout based on randomized complete block design with three replications at Gonabad Agricultural and Natural Resources Research Station, Center for Research and Agricultural Education and Natural Resources of Khorasan Razavi in years 2015-16. The treatments were all combination of wheat straw in four levels (2, 4, 6 and 8 t.ha-1) and time of wheat straw spreading in three dates (22 June, 6 July and 23August). The results showed that the rate and time of straw application and their interaction had significant effect on all studied characteristics of saffron flower. Spreading of wheat straw at 22 June compared to 6 July and 23August had the highest significant effect on increasing flower number, fresh flower yield, dry stigma and style yield (up to 41.7, 16.9 and 50 percent, respectively). In addition, all studied criteria of saffron replacement corms were significantly affected by the time of wheat straw spreading, different levels of wheat straw application and their interactions. Among the studied treatments, the highest corm yield in terms of more than 8g (595.65 g) and total saffron replacement corms yield were obtained in applying 8 t.ha-1 wheat straw at 22 June (1163 g). Compared to the treatment of 2 tons per hectare, the remnants on the same date show an increase of 112.2 and 12.9 percent, respectively.
Agriculture
Parviz Rezvani Moghaddam; Alireza Koocheki; Abdollah Molafilabi; S. Mohammad Seyyedi
Abstract
In order to investigate the effects of different levels of applied wheat straw as mulch in different dates on flower characteristics and corms behavior of Saffron (Crocus sativus L.) in the second year, a field experiment was conducted as factorial layout based on a randomized complete block design with ...
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In order to investigate the effects of different levels of applied wheat straw as mulch in different dates on flower characteristics and corms behavior of Saffron (Crocus sativus L.) in the second year, a field experiment was conducted as factorial layout based on a randomized complete block design with three replications at Faculty of Agriculture, Ferdowsi University of Mashhad, Iran in years of 2010-2011 and 2011-2012. The experimental treatments were all combination of different levels of wheat straw as mulch (0, 2, 4, 6 and 8 t. ha-1) based on surface applied method in three different dates (June, August and October). The results showed that the applied wheat straw as mulch in different dates had significant effects on flower characteristics of saffron (flower number, fresh and dried flower and stigma+ style yields). Based on these results, applied wheat straw as mulch in October had highest effects on increasing flower number, fresh and dried flower yields (by 46, 61 and 65%, respectively). In addition, applied wheat straw as mulch had significant effects on number and yield of replacement corms. The applied straw as mulch in October increased yield of replacement corms with 12 g or higher weight and total corm yield of saffron by 104 and 103 %, respectively, as compared to control treatment.
