A new protocol for estimating the determinacy of potato varieties will be released in the next few months and will be added to the AHDB Nutrient Management Guide (RB209).
Yangi protokol sanoat uchun qanday foyda keltiradi?
- Protokol selektsionerlarga va navlarni rivojlantirish bilan shug'ullanadiganlarga, yangi navlar uchun azot bo'yicha tavsiyalar ishlab chiqarishda vaqt va pulni tejashga yordam beradi
- Yetishtiruvchilar va agronomlar yangi va mavjud navlar uchun aniqroq azot / aniqlovchi guruhlarni olishadi va shuning uchun ularning hosiliga nisbatan N stavkalarini yaxshilaydilar.
Kartoshkaning aniqligi - bu nima va nima uchun u o'simliklarning oziqlanishi uchun muhimdir?
A key component of nitrogen fertiliser recommendations as used in the AHDB Nutrient Management Guide (RB209), is the nitrogen (determinacy) group.
Ular to'rt guruhga asoslangan: 1-guruh (juda aniq) va 4-guruhgacha (juda noaniq):
- Potato varieties such as Accord, Estima and Innovator are part of Group 1 as they cease leaf production after the first (or indeed second or third flowers) but when compared with indeterminate varieties, they will produce fewer leaves
- Varieties classified as group 4 determinacy, for example Cara, Markies and Royal, continue to produce leaves and flowers until they are curtailed by shorter days and frost
“It is essential to know the grouping of your variety, in order to calculate the correct nitrogen recommendations,” said Alice Sin, AHDB Resource Management Scientist.
Yangi protokol
Tomonidan olib borilgan tadqiqotlar AHDB and NIAB, with the help of Greenvale AP and Cygnet PB, has resulted in a new protocol for estimating determinacy. The determinacy of the potato varieties was studied using the following four methods: plant ground cover, main axis nodes and harvest index measure both fresh and dry weight. The current approach is to count main-axis nodes on the potato plant since this method is robust, quick, cheap and non-destructive. By combining the four methods, highly reliable data has been obtained.
Ilgari turli navlar guruhlari uchun N stavkalarini aniqlash usullari bir necha qimmat azotga javob berish tajribalarini o'tkazishga asoslangan edi. Natijada, ko'p navlar noto'g'ri taqsimlanishi mumkin edi, natijada kerak bo'lgandan ko'ra ko'proq yoki kamroq N qo'llaniladi.
Elis Sin shunday dedi: "Avvalgi N stavkalari bo'yicha guruhlarning ba'zilari fikr va tasodifiy kuzatuvlarga asoslangan edi, endi dalillarga asoslangan protokolni nashr etishdan mamnunmiz, chunki bu butun sohaga katta yordam beradi".
These updated groupings, including newer varieties from the top 50 varieties grown in GB, will be incorporated in the 2021 revision of the AHDB Nutrient Management Guide (RB209) Section 5.
Trials by Meijer Seed Potato Ltd
The protocol is currently being trialled by Meijer Seed Potato Ltd, and it will be published on the AHDB website in the coming months. Max Tärneberg, Meijer International Product Manager, said: “We are in a useful position for this project because we have multiple trial sites across the UK with plots containing our entire variety portfolio.
Bu yil biz yangi protokolga muvofiq normal baholarimiz bilan bir qatorda tugunlarni hisoblash metodologiyasini ham qo'shmoqchimiz. Biz allaqachon eng yangi navlardan tashqari barchaning N guruhlarini yaxshi tushunamiz, bu bizga yangi tizimni kalibrlashda yordam beradi. Agar biz buni hozirgi tushunchamizga qarshi to'g'ri deb topsak, unda bu yangi navlarni qanday muvaffaqiyatli sotishimizga katta ta'sir ko'rsatishi mumkin. Hatto nomga ega bo'lishidan oldin, biz navlar bo'yicha N guruhini to'plashimiz mumkin! "
Maks Tärneberg kartoshka sanoati uchun yangi protokol zarurligini tan oladi:
"Kengroq sanoat ma'noda, bu ko'plab navlarning N guruhlarini dolzarblashtirishi mumkin, agar aniqroq N tavsiyalar bizning sanoatimiz uchun osonroq bo'lsa, unda biz sezilarli tejashni ko'rib chiqamiz".
To support the industry further the new protocol will be included in the training courses provided by Artis and will also be discussed during workshops which will be organised at AHDB’s Strategic Potato Farms (Spot) this year. This will include Scotland’s new SPot farm, seed potato supplier, Milton of Mathers farm, situated in St Cyrus, Montrose.
