Abstrak. Kemasaman tanah merupakan salah satu sifat yang penting, sebab terdapat hubungan pH dengan ketersediaan unsur hara juga terdapat beberapa hubungan antara pH dengan sifat-sifat tanah. Untuk mendapatkan kemasaman tanah di lapangan diperlukan peta pengambilan sampel. Setelah mendapatkan peta kemasaman tanah diperlukan adanya analisis kebutuhan kapur sehingga memperoleh hasil yang baik untuk perubahan kemasaman tanah menjadi netral. Untuk menetralkannya diperlukan pengapuran tanah. Penelitian ini bertujuan untuk mengetahui penyebaran kemasaman tanah di Kecamatan Keumala sekaligus mengetahui kebutuhan kapur di lahan pertanian. Penelitian ini dilaksanakan di Kecamatan Keumala Kabupaten Pidie. Penelitian ini adalah metode grid yaitu dengan pengambilan sampel tanah pada luas 1 km2 per titik sampel dengan menggunakan bor tanah dan menggunakan GPS untuk menuju ketitik koordinat sampel tanah yang telah ditentukan. Dalam metode ini, pengamatan dilakukan dalam pola teratur pada interval titik pengamatan yang berjarak sama dalam kedua arah. Hasil analisis pH tanah di Kecamatan Keumala terdiri atas tiga kategori yaitu agak masam dengan pH berkisar (5,6-6,5), netral dengan pH berkisar (6,6-7,5), dan agak alkalis dengan pH berkisar (7,6-8,5). Sebaran luas areal lahan berdasarkan nilai pH tanah adalah lahan dengan pH agak masam seluas 171,05 ha, pH netral seluas 551,88 ha dan pH agak alkalis seluas 4.162,94 ha. Tanah pada Kecamatan Keumala tidak membutuhkan  kapur dikarenakan hasil pH tanah yang telah di uji di laboratorium didapatkan hasil, yaitu pH tanah yang ada di lahan tersebut adalah agak masam, netral dan agak alkalis, sedangkan yang mendominasi adalah pH agak alkalis. Hasil Al-dd tidak didapatkan pada saat uji di laboratorium tersebut.  Mapping Soil Acidity and Analysis of Lime Requirement InDistrict of Pidie District Keumala  Abstract. Soil acidity is one trait that is important, because there is a relationship of the pH with the availability of nutrient elements, there are some relationship between the pH with soil properties. To get the soil acidity in the field needed a map of sampling. After getting the map of soil acidity required the existence of a needs analysis of lime so as to obtain a good result for a change acidity the soil becomes neutral. Neutralization is required for liming the soil. This research aims to know the spread of soil acidity in district Keumala while knowing the needs of lime on agriculture land. This research was carried out in district of pidie regency keumala. This research is a method of the grid that is by sampling the soil at 1 km2 per sample point by using a drill ground and use the GPS to get to the point coordinates of the soil samples have been determined. In this method, the observations made in a regular pattern on the observation point of the interval is the same in both directions. The results of the analysis of the soil pH in Keumala consists of three categories. Somewhat Dour with the pH range (3.5-6.5), neutral with a pH range (6.6-7.5), and somewhat alkalis with pH ranges (7.6-8.5). The vast acreage of land distribution is based on the value soil pH is a land with a pH somewhat wry covering 171.05 ha, 551.88 ha area of neutral pH and pH is somewhat alkalis 4,162.94 ha. Land at distruct Keumala don't need lime because soil pH results that have been tested in the laboratory results are obtained, namely soil pH that is on the land is somewhat Dour, alkalis and rather neutral, whereas pH was somewhat dominating alkalis. The results of Al-dd is not obtained at the time of testing in the laboratory.

This study aims to identify the effects of mycorrhiza arbuscular and phosphate source fertilizer on the growth and nutrients absorption of soybean on critical land. The research was carried out in the experimental garden of Agricultural Faculty, University of Syiah Kuala Darussalam, Banda Aceh. The research was done in an experiments using polybag of random design group (shelves) consisting 2 factors, namely mycorrhiza arbuscular consisting of 4 standards without mycorrhiza, glomus 10 g, mycorrhiza gigaspora 10 g, and mixture glomus 5 g + gigaspora 5 g and phosphate fertilizer consisting 4 factors namely without phosphate fertilizer, rock fosfat, guano, and SP-36. The result showed that the interaction effect of mycorrhiza glomus and guano phosphate application improved growth and nutrients absorption of soybean plants. Key words: Gigaspora, Glomus, guano, rock phosphate, soybean, SP-36/>

Abstrak. Penelitian ini bertujuan untuk melihat metode kebutuhan kapur dan jenis kapur yang  efektif terhadap serapan hara dan hasil jagung (Zea mays L.) pada Ultisol dengan menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan 9 perlakuan dan ulangan sebanyak 3 kali sehingga didapatkan 27 satuan unit percobaan. Faktor yang diteliti adalah metode perhitungan kebutuhan kapur sebagai faktor 1 dan jenis kapur sebagai faktor 2. Faktor 1 metode perhitungan kebutuhan kapur terdiri dari 3 taraf yaitu : metode Corey (M1), metode berdasarkan Aldd (M2), dan metode Knooti (M3). Faktor 2 adalah jenis kapur yang terdiri dari 3 taraf yaitu : dolomit (K1), kalsit (K2), dan gypsum (K3). Untuk melihat perbedaan hasil perlakuan digunakan uji F dan dilanjutkan dengan uji (BNT0,05). Hasil penelitian didapatkan serapan hara dan komponen hasil jagung yang bervariasi secara nyata akibat interaksi metode perhitungan kebutuhan kapur. Gypsum yang dihitung dengan  metode Corey  menghasilkan kadar dan serapan tanaman jagung yang lebih baik dari jenis kapur yang dihitung dengan metode perhitungan lainnya, demikian juga halnya dengan komponen hasil jagung yang ditanam pada Ultisol.Nutrient Absorption and Corn Result (Zea Mays L.) Due To The Growth of Types And Calculation Methods on UltisolAbstract. The study aims to see the lime and lime lime requirement method that was effective against nutrient uptake and corn yield (Zea mays L.) on Ultisol using Factorial Randomized Block Design (RAK) with 9 treatments and replicates 3 times so that 27 units of experiments. Factor of research is calculation method of lime requirement as factor 1 and lime type as factor 2. Factor 1 calculation method of lime requirement consists of 3 levels that is: Corey method (M1), method based on Aldd (M2), and Knooti (M3) method. Factor 2 is a type of lime which consists of 3 levels, namely: dolomite (K1), calcite (K2), and gypsum (K3). To see difference between treatment result used F tests and continued with test (BNT0,05). The results showed nutrient uptake and corn yield components that varied significantly due to the interaction of calculation method of lime requirement. Gypsum calculated by Corey method yields better corn absorption rate and absorption of lime species calculated by other calculation methods, as well as corn components grown on Ultisol.

The purpose of this study is to obtain objective information about the dosage of the use of chicken egg shells as a soil reformer in the sustainable cultivation of mustard plants. The research has been carried out at the Coronary Garden, Faculty of Agriculture, Syiah Kuala University from August to September 2021. The study used polybags in the form of experiments with a completely randomized design. The treatment tried was in the form of various doses of chicken eggshell flour (0, 5, 10, 15, and 20 g / stem), and the morphological response of mustard plants were measured in the form of; plant height; the number of leaves per plant; fresh weight; and the dry weight of the plant. To test the effect of treatment on the response variables of mustard plants using the ANOVA statistical test procedure, while to test the difference in the average value of plant responses using the Tukey HSD test at α 0.05. Mustard plants showed a positive morphological response to the administration of chicken shell flour as seen from plant height, the number of leaves and wet weight, and dry weight. Chicken eggshell flour as a soil enhancer contains macro and micro nutrients to increase the growth and yield of mustard rice fields. The use of chicken eggshell flour of 5 g / stem provides the best morphological response for mustard plants.

Abstrak : Penelitian ini bertujuan untuk mengetahui luas penyimpangan lahan sawah irigasi, produktivitas dan kebutuhan pupuk N, P, K pada padi sawah irigasi perkecamatan di Kabupaten Bireuen. Penelitian telah dilakukan pada bulan Agustus 2016 sampai dengan Februari 2017, di Kabupaten Bireuen. Penelitian ini menggunakan metode survey deskriptif yaitu melakukan peninjauan penyimpangan lahan ke lapangan berdasarkan pada Peta Overlay antara RTRW Bireuen 2013 dengan Google Earth 2016, untuk data produksi diambil jumlah sampel 10% dari jumlah desa disetiap kecamatan dan setiap desa diambil satu orang petani. Hasil penelitian menunjukkan bahwa terjadi penyimpangan di Kabupaten Bireuen dengan total 2.783,41 ha. Penyimpangan lahan yang paling luas terjadi di Kecamatan Jeumpa dengan luas 671,66 ha, Penyimpangan lahan sawah terkecil terdapat di Kecamatan Kota Juang dengan luas lahan 74,33 ha. Penyimpangan yang dominan adalah perumahan. Produktivitas padi sawah di Kabupaten Bireuen adalah 6,22 ton ha-1, rata-rata produktivitas padi perkecamatan berkisar antara 4,59 ton ha-1 sampai dengan 7,81 ton ha-1 dan Kecamatan Simpang Mamplam memiliki produktivitas tertinggi yaitu 7,81 ton ha-1. Kebutuhan pupuk urea untuk lahan sawah di Kabupaten Bireuen berjumlah 3.642,44 ton, SP36 1.142,73 ton dan KCl 912,69 ton untuk sekali tanam dan Kecamatan Simpang Mamplam merupakan kecamatan yang paling banyak membutuhkan pupuk yaitu Urea 362,14 ton, SP36 181,07 ton dan KCl 181,07 ton. Analysis of Field Deviation, Productivity and N,P,K Fertilizer Need on Irrigated Rice Field at BireunAbstract :The goal of this research is to seek the information about how extent the deviation that happened at irrigated field area. In addition, this research also concerned on productivity and N,P,K fertilizer need on irrigated rice field at every sub-district in Bireun. This research has been done on August 2016 till February 2017 at Bireun. The methodology that was used on this research was descriptive survey method, this method will observes the area deviation to the field based on Overlay map between Bireun RTRW in 2013 and Google Earth 2016. TheProduction data was obtained through taking 10 % of the research sample. The sample is every village in sub-district and every village take one farmer. The result of this research indicated that there was deviation at Bireuen district with the total deviation 2.783,41 ha. The widest area deviation happened at Jeumpa with the total deviation 671, 66 ha. The smallest area deviation happened at Kota Juang with the total area 74,33 ha. The dominant deviation that happened was housing. The field Productivity at Bireun district was 6,22 ton ha-1, the average of rice productivity per sub-district turned to the number between 4,59 ton ha1 to 7,81 ton ha-1. The total need of urea fertilizer for field area at Bireun district was 3.642,44 ton, SP36 was 1142,73 ton and KCl was 181,07 ton.Penyimpangan; Produktivitas; Pupuk; Peta Eksisting Deviation; productivity; Fertilizer; Existing Map;