ENERGY AND ECONOMIC EFFICIENCY OF FERTILIZER APPLICATION SYSTEM IN CROPROTATIONS

2018 ◽  
Vol 10 (4) ◽  
pp. 54-63
Author(s):  
V.N. Voropaev ◽  
◽  
S.V. Kozhemyako ◽  
2016 ◽  
Vol 111 (7) ◽  
pp. 1208 ◽  
Author(s):  
N. S. Chandel ◽  
C. R. Mehta ◽  
V. K. Tewari ◽  
B. Nare

2002 ◽  
Author(s):  
Duane L Needham ◽  
Stewart D Reed ◽  
Marvin L Stone ◽  
John B Solie ◽  
Kyle W Freeman ◽  
...  

2013 ◽  
Vol 303-306 ◽  
pp. 1465-1469
Author(s):  
Ying Jie Yu ◽  
Zhen Yang Ge ◽  
Shu Hui Zhang

A variable rate fertilizer application system with ARM microprocessor as control core was developed. The structure and realization principle of the system were introduced. The system consists of two velocity sensors of photoelectric encoder and proximity transducer, an ARM controller, and an executive unit of stepper motor. The system has automatic and manual variable rate fertilization modes. In the automatic mode, the system can be positioned automatically without GPS, and controls the stepping motor’s rotational speed according to the fertilizing amount in different grid to realize variable rate fertilization. In the manual mode, the controller combines the fertilizing amount in different grid input manually through the keys with the velocity of the applicator, and calculates the stepping motor’s rotational speed to realize the variable rate fertilizer application. The applicator working status can be seen in LCD on the controller. The experimental results show that the system can work properly.


2021 ◽  
Vol 285 ◽  
pp. 01016
Author(s):  
E. V. Truflyak ◽  
N. Yu. Kurchenko ◽  
V. E. Kuryan ◽  
Dadu Mones

In the training and experimental farm of the Kuban State Agrarian University Krasnodarskoe from February 19 to July 6, 2020, an experiment was conducted on the comparative analysis of differentiated fertilizer application in on-line and off-line modes. The aim of the experiment was to compare the modes of differentiated application of nitrogen fertilizers (first and second top dressing) for winter wheat using task maps and GreenSeeker sensors. The calculation of economic efficiency showed that when using nitrogen scanners, fertilizers are saved on average 16 kg / ha, compared to the mode of creating task maps based on the NDVI index based on satellite data without losing grain yield and quality (gluten content increased by 2.3 %; protein content-0.6 %).


2020 ◽  
Vol 14 (4) ◽  
pp. 162
Author(s):  
EKWASITA RINI PRIBADI ◽  
MONO RAHARJO

<p>ABSTRAK</p><p>Pemberian pupuk N, P, dan K yang tepat jumlah, dan jenis padatanaman temulawak, diharapkan dapat meningkatkan efisiensi penggunaanpupuk dan biaya sehingga produksi dan pendapatan yang diperoleh akanoptimal. Untuk itu dilakukan pengujian beberapa dosis pupuk urea, SP-36dan KCl pada temulawak di Kebun Percobaan Sukamulaya pada tanahLatosol dengan ketinggian tempat 350 m dpl, tipe iklim C (klasifikasiSchmidt dan Ferguson). Penanaman dilakukan pada bulan Agustus 2006dan panen dilakukan bulan September 2007. Percobaan ini menggunakanrancangan acak kelompok (RAK) yang disusun secara faktorial dengan 3kali ulangan. Faktor pertama, kedua dan ketiga adalah pupuk urea (N),SP-36 (P) dan KCl (K) masing-masing dengan dosis 100 kg/ha, 200 kg/hadan 300kg/ha. Ukuran petak percobaan adalah 3,75 m x 4 m per perlakuan/ulangan. Percobaan menggunakan bibit temulawak nomor harapan Fdengan jarak tanam 75 cm x 50 cm. Sebagai pupuk dasar diberikan pupukkandang dengan dosis adalah 20 ton pupuk kandang. Pupuk SP-36, danKCl diberikan sesuai dengan perlakuan yang seluruhnya diberikan padasaat tanam. Sedangkan pupuk urea diberikan sesuai dengan perlakuanmasing-masing 1/3 bagian pada umur 1, 2, dan 3 BST (Bulan SesudahTanam). Tanaman dipanen pada umur 10 bulan setelah tanam (BST).Peubah yang diamati meliputi; data asupan (input) berupa penggunaansarana produksi usahatani, penggunaan tenaga kerja dan peralatan, sertadata keluaran (output) berupa hasil rimpang segar, simplisia kering, danrendemen ekstrak temulawak. Harga masukan dan keluaran yangdigunakan mengacu pada harga standard/pasar yang berlaku pada saatpenelitian dilakukan. Analisis efisiensi teknis dan ekonomis digunakanuntuk menentukan dosis pemupukan yang paling baik untuk dikembang-kan. Hasil penelitian menunjukkan, berdasarkan beberapa kriteria analisisefisiensi teknis dan ekonomis pengembangan temulawak nomor harapan Fdianjurkan menggunakan dosis pemupukan an-organik yang rendah yaitu200 kg/ha urea, dan SP-36 dan KCl masing-masing 100 kg/ha. Dengandosis pemupukan tersebut diperoleh : (1) produksi rimpang, kurkuminoiddan xanthorizol masing-masing 2.277 kg, 33,24 dan 73,26 kg per 1.000 m 2lahan, (2) tingkat pendapatan bersih Rp. 344.500/1.000 m 2 lahan, rasiobiaya operasional terhadap pendapatan kotor 23,13%, rasio pendapatandikurangi biaya operasional terhadap pendapatan kotor 76,87%, danefisiensi ekonomi tiap perlakuan pemupukan dibanding kontrol (urea,SP36 dan KCl masing-masing 100 kg/ha) 5,08.Kata kunci : Curcuma xanthorrhiza Roxb, kajian finansial, pupuk NPK,nomor harapan F</p><p>ABSTRACT</p><p>Efficiency of NPK Fertilizer Application on Java Turmeric (Curcumaxanthorrhiza Roxb)Efficiency of inorganic fertilizers application is determined byeffective type and fertilizers dosage. Current experiment was designed tocompare the efficiency of application of three levels dosage of urea, SP-36, and KCl on java turmeric farming system. The experiment wasconducted at Sukamulya (Sukabumi) Experimental Garden on latosol soiltype, 350 m above sea level, with climate type A of Schmidt andFerguson’s climate classification from August 2007 to September 2008.Treatments were combination of 100 kg/ha, 200 kg/ha, and 300 kg/ha ofeach urea, SP36, and KCl fertilizer. The treatments were designed infactorial randomized block with three replications. Organic fertilizer(manure) was applied to all experiment plots at planting time with dosageof 20 tons/ha. SP36 and KCl fertilizer were applied at planting time, whileurea fertilizer was applied in three equal parts, separately, on plantingtime, one and two months after planting time. Java turmeric promisingline of F was used as plant materials and planted at 75 cm x 50 cm plantedspacing. Physical and economic efficiency analysis of the each treatmentunit was used to evaluate the efficiency of fertilizer application withtreatment-related costs were assumed as variable costs. Results showedthat based on physical and economic efficiency, fertilizer combination of200 kg urea/ha, 100 kg SP36/ha, and 100 kg KCl/ha was the most efficientdosage with yield of rhizome, curcuminoid and xanthorhizol at the dosagelevel per 1000 m 2 were 2.277 kg, 33,24 kg, and 73,26 kg respectively.Moreover, that were gained crop value Rp. 344.500/1.000 m 2 , operatingexpense ratio 23,13%, net farm income from operation ratio 76,87%, andeconomic efficiency each treatment compare to control 5,08 times.Key words: Curcuma xanthorrhiza Roxb, financial analysis, NPKfertilizer, promising line F</p>


CORD ◽  
2018 ◽  
Vol 34 (1) ◽  
pp. 6
Author(s):  
S.H.S. Senarathne

Organic matter contributes in maintaining soil fertility in agriculture.  Vermicompost is rich in plant nutrients and recognized as potential organic manure source for many crops.  In this experiment, different amount of vermicompost and inorganic fertilizers were tested. The objective of the research was to evaluate the effect of vermicompost on the growth of coconut seedling in the field conditions and to reduce the cost of production of coconut plantations.Treatments were arranged in a Randomized Complete Block Design (RCBD) with three replicates. The experiment consisted of three different fertilizer treatments with vermicompost (100%) + Dolomite 500g (T1), Inorganic fertilizer (Young Palm Mixture) + Dolomite (T2) and vermicompost + Inorganic fertilizer (Young Palm Mixture) + Dolomite (T3).  Growth measurements revealed A significantly higher seedling girth, leaf production rate and early highest coconut seedling flowering percentage in the vermicompost base integrated fertilizer applied treatment when compare with other two treatments. This experiment had brought out that application of vermicompost base integrated fertilizer application system is beneficial for coconut seedlings in the field for the better field establishment and vigorous seedling growth.


2020 ◽  
Vol 44 (01) ◽  
pp. 12-19
Author(s):  
Satish Devram Lande ◽  
Indra Mani

In dry land areas, seed germination greatly affected by insufficient soil moisture during sowing. Nitrogenous fertilizers like granular urea remain unavailable due to inadequate soil moisture to dissolve, dilute and convey it to root zone level. Precise application of aqueous fertilizer at root zone depth at the time of sowing enhances seed germination percentage by increasing available soil moisture as per the soil-moisture-crop requirement. A pressurized aqua ferti metering system was designed and developed for application of aqueous fertilizer diluted with water along the side of seed. The prototype consisted of pressurized aqueous fertilizer metering system through positive displacement pump, stationary opening with agitator type seed metering system and shovel type furrow opener with provision of carrying seed and aqueous fertilizer delivery tubes. A pressurized aqueous fertilizer application system consisted of rotary gear pump to vary pump rotational speed and circular distributor for uniform distribution of aqueous fertilizer. The flow rate and pressure were controlled by control valve for required amount of aqueous fertilizer. Three nozzles of size 8, 10 and 12 mm were evaluated at different pump rotational speeds (1800, 1440, 1152, 1080 and 864 rpm) and different control valve positions (0, 2, 4 and 6 kg/cm2 ) for desired flow rate. The discharge rate at a particular pressure was found to vary linearly with the Pump rotational speed and decreased as the line pressure increased. The desired flow rate in pressurized pumping system was obtained in a nozzle of size 10 cm up to a maximum pump speed of 1440 rpm and for a line pressure of less than 4 kg/cm2 .


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