S176 :
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2014
Authors:
Sedigheh Geran [Author], Shahin Shahsavani[Supervisor], Mojtaba Mahmudi [Supervisor], Shahrokh Gharanjik[Advisor]
Abstarct: To evaluate the combined effects of different amounts of chemical fertilizers and livestock (sheep) to reach appropriate formula fertilizer for citrus (Thomson navel varieties) in a factorial experiment in 2013 in a randomized complete block design with 9 treatments and 3 replications in a garden Sari city came into force. Treatments were consisted of three levels of sheep manure (0, 6 and 12 kg per tree) and macro levels of fertilizers containing ammonium sulphate, triple super phosphate and potassium sulfate (30 and 60 percent baxsed on soil test recommendations). The results showed that the maximum absorption of nitrogen, phosphorus, potassium leaves as well as vitamin C, titrable acidity, fruit weight, volume, juice and fruit yield of Thompson's group used a combination of 60 percent of artificial fertilizers (110 gr ammonium sulphate, 60 gr superphosphate 40 gr of potassium sulfate per tree) and 6 kg of manure, respectively. The highest concentrations was obtained of calcium, magnesium, iron, manganese, zinc in fruit and leaf water use by 30 percent from Thomson by using chemical fertilizers (55 gr ammonium sulfate, 30 gr superphosphate, 20 gr potassium sulphate per tree) and 12 kg of manure. The maximum amount of juice pH and potassium by consuming 60% of chemical fertilizers (110gr ammonium sulfate, 60gr superphosphate, 40 gr of potassium sulfate per tree) and 12 kg of manure was created. Citrus trees (Thompson Novel) by taking 60% of chemical fertilizers (110 gr ammonium sulfate,60 gr superphosphate, 40 gr of potassium sulfate per tree) and 12 kg of manure (sheep) had the highest growth in spring and summer. Maximum nitrogen, phosphorus and potassium and soil pH is at least 60 percent of the fertilizer application macros and 6 kg of manure was obtained. However, the application of different chemical fertilizers and livestock (sheep) did not cause a statistically significant difference in the amount of soil CEC. Chemical fertilizers also was apply 30% of macros (55 gr ammonium sulfate, 30 gr superphosphate, 20 gr potassium sulphate per tree) and a maximum of 12 kg of manure and organic carbon in soil salinity minimal.
Keywords:
#Animal manure (sheep) #Fertilizers #Fruit quality characteristics #Fruit yield #Fruit size #Growing in the summer #Quantity of fruits #Spring growth Link
Keeping place: Central Library of Shahrood University
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